31111748552556 has 192 divisors, whose sum is σ = 96226434447360. Its totient is φ = 8507041355520.

The previous prime is 31111748552539. The next prime is 31111748552609. The reversal of 31111748552556 is 65525584711113.

31111748552556 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 1 + 7 + 4 + 85 + 5 + 2 + 556 = 666.

It is a super-2 number, since 2×31111748552556² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7410480 + ... + 10823063.

It is an arithmetic number, because the mean of its divisors is an integer number (501179346080).

Almost surely, 2^{31111748552556} is an apocalyptic number.

31111748552556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31111748552556 is an abundant number, since it is smaller than the sum of its proper divisors (65114685894804).

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

31111748552556 is a wasteful number, since it uses less digits than its factorization.

31111748552556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18233661 (or 18233653 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 54.

The spelling of 31111748552556 in words is "thirty-one trillion, one hundred eleven billion, seven hundred forty-eight million, five hundred fifty-two thousand, five hundred fifty-six".