31303111431040 has 64 divisors (see below), whose sum is σ = 74852139864960. Its totient is φ = 12518209533952.

The previous prime is 31303111431023. The next prime is 31303111431073. The reversal of 31303111431040 is 4013411130313.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 31303111430996 and 31303111431014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284467 + ... + 8567026.

It is an arithmetic number, because the mean of its divisors is an integer number (1169564685390).

Almost surely, 2^{31303111431040} is an apocalyptic number.

It is an amenable number.

31303111431040 is an abundant number, since it is smaller than the sum of its proper divisors (43549028433920).

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

31303111431040 is a wasteful number, since it uses less digits than its factorization.

31303111431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11855639 (or 11855627 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31303111431040 its reverse (4013411130313), we get a palindrome (35316522561353).

The spelling of 31303111431040 in words is "thirty-one trillion, three hundred three billion, one hundred eleven million, four hundred thirty-one thousand, forty".