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3131000032230 = 2325738322935659
BaseRepresentation
bin101101100011111110001…
…001010000101111100110
3102002022122202221102101200
4231203332021100233212
5402244242002012410
610354210032503330
7442131046105230
oct55437611205746
912068582842350
103131000032230
11aa7938990924
124269856aab46
13199337953485
14ab78111b250
15566a02933c0
hex2d8fe250be6

3131000032230 has 192 divisors, whose sum is σ = 9333551185920. Its totient is φ = 713351225088.

The previous prime is 3131000032187. The next prime is 3131000032249. The reversal of 3131000032230 is 322300001313.

3131000032230 is a `hidden beast` number, since 3 + 1 + 310 + 0 + 0 + 0 + 322 + 30 = 666.

It is a super-2 number, since 2×31310000322302 (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 553275141 + ... + 553280799.

It is an arithmetic number, because the mean of its divisors is an integer number (48612245760).

Almost surely, 23131000032230 is an apocalyptic number.

3131000032230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131000032230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4666775592960).

3131000032230 is an abundant number, since it is smaller than the sum of its proper divisors (6202551153690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131000032230 is a wasteful number, since it uses less digits than its factorization.

3131000032230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355 (or 8352 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 3131000032230 its reverse (322300001313), we get a palindrome (3453300033543).

The spelling of 3131000032230 in words is "three trillion, one hundred thirty-one billion, thirty-two thousand, two hundred thirty".