31310441040 has 80 divisors (see below), whose sum is σ = 97079911488. Its totient is φ = 8347941888.

The previous prime is 31310441021. The next prime is 31310441047. The reversal of 31310441040 is 4014401313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 31310440998 and 31310441016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310441047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2120724 + ... + 2135436.

Almost surely, 2^31310441040 is an apocalyptic number.

31310441040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31310441040 is an abundant number, since it is smaller than the sum of its proper divisors (65769470448).

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

31310441040 is a wasteful number, since it uses less digits than its factorization.

31310441040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596 (or 23590 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31310441040 its reverse (4014401313), we get a palindrome (35324842353).

The spelling of 31310441040 in words is "thirty-one billion, three hundred ten million, four hundred forty-one thousand, forty".