31010156040 has 32 divisors (see below), whose sum is σ = 93030468480. Its totient is φ = 8269374912.

The previous prime is 31010156027. The next prime is 31010156041. The reversal of 31010156040 is 4065101013.

It is a junction number, because it is equal to n+sod(n) for n = 31010155998 and 31010156016.

It is not an unprimeable number, because it can be changed into a prime (31010156041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129208864 + ... + 129209103.

It is an arithmetic number, because the mean of its divisors is an integer number (2907202140).

Almost surely, 2^31010156040 is an apocalyptic number.

31010156040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31010156040 is an abundant number, since it is smaller than the sum of its proper divisors (62020312440).

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

31010156040 is a wasteful number, since it uses less digits than its factorization.

31010156040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258417981 (or 258417977 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 31010156040 its reverse (4065101013), we get a palindrome (35075257053).

The spelling of 31010156040 in words is "thirty-one billion, ten million, one hundred fifty-six thousand, forty".