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23131322300 = 2252231313223
BaseRepresentation
bin10101100010101110…
…111111011110111100
32012201001122220220202
4111202232333132330
5334333104303200
614343144303032
71446133665302
oct254256773674
965631586822
1023131322300
1198a0034899
124596771a78
13224834b778
141196114272
15905b001d5
hex562bbf7bc

23131322300 has 18 divisors (see below), whose sum is σ = 50194969608. Its totient is φ = 9252528880.

The previous prime is 23131322281. The next prime is 23131322309. The reversal of 23131322300 is 322313132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131322309) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 115656512 + ... + 115656711.

Almost surely, 223131322300 is an apocalyptic number.

23131322300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131322300 is an abundant number, since it is smaller than the sum of its proper divisors (27063647308).

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

23131322300 is a wasteful number, since it uses less digits than its factorization.

23131322300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231313237 (or 231313230 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23131322300 its reverse (322313132), we get a palindrome (23453635432).

The spelling of 23131322300 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-two thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 231313223 462626446 925252892 1156566115 2313132230 4626264460 5782830575 11565661150 23131322300