31911854048256 has 704 divisors, whose sum is σ = 109522017239040. Its totient is φ = 8036198645760.

The previous prime is 31911854048147. The next prime is 31911854048257. The reversal of 31911854048256 is 65284045811913.

It is a junction number, because it is equal to n+sod(n) for n = 31911854048196 and 31911854048205.

It is not an unprimeable number, because it can be changed into a prime (31911854048257) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 538667085 + ... + 538726323.

Almost surely, 2^{31911854048256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31911854048256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54761008619520).

31911854048256 is an abundant number, since it is smaller than the sum of its proper divisors (77610163190784).

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

31911854048256 is a wasteful number, since it uses less digits than its factorization.

31911854048256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59370 (or 59352 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 31911854048256 in words is "thirty-one trillion, nine hundred eleven billion, eight hundred fifty-four million, forty-eight thousand, two hundred fifty-six".