231231161339552 has 24 divisors (see below), whose sum is σ = 496621471514112. Its totient is φ = 105105073336000.

The previous prime is 231231161339491. The next prime is 231231161339557. The reversal of 231231161339552 is 255933161132132.

It is a happy number.

231231161339552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231231161339497 and 231231161339506.

It is not an unprimeable number, because it can be changed into a prime (231231161339557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328453353824 + ... + 328453354527.

It is an arithmetic number, because the mean of its divisors is an integer number (20692561313088).

Almost surely, 2^{231231161339552} is an apocalyptic number.

231231161339552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231231161339552 is an abundant number, since it is smaller than the sum of its proper divisors (265390310174560).

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

231231161339552 is a wasteful number, since it uses less digits than its factorization.

231231161339552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656906708372 (or 656906708364 counting only the distinct ones).

The product of its digits is 874800, while the sum is 47.

The spelling of 231231161339552 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, one hundred sixty-one million, three hundred thirty-nine thousand, five hundred fifty-two".