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31224311320230 = 23257310133729717
BaseRepresentation
bin1110001100101111110011…
…11111000000111010100110
311002120000101221102220020100
413012113321333000322212
513043034342144221410
6150224130043444530
76401611354041000
oct706277177007246
9132500357386210
1031224311320230
119a491797a6936
123603592826746
131456594685832
1479d39c5cd370
15392338e9d8c0
hex1c65f9fc0ea6

31224311320230 has 384 divisors, whose sum is σ = 95898607084800. Its totient is φ = 7045116825600.

The previous prime is 31224311320177. The next prime is 31224311320243. The reversal of 31224311320230 is 3202311342213.

31224311320230 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 4 + 311 + 320 + 23 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31224311320194 and 31224311320203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1050707332 + ... + 1050737048.

It is an arithmetic number, because the mean of its divisors is an integer number (249735955950).

Almost surely, 231224311320230 is an apocalyptic number.

31224311320230 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 31224311320230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47949303542400).

31224311320230 is an abundant number, since it is smaller than the sum of its proper divisors (64674295764570).

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

31224311320230 is a wasteful number, since it uses less digits than its factorization.

31224311320230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30189 (or 30172 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31224311320230 its reverse (3202311342213), we get a palindrome (34426622662443).

The spelling of 31224311320230 in words is "thirty-one trillion, two hundred twenty-four billion, three hundred eleven million, three hundred twenty thousand, two hundred thirty".