31457442860 has 12 divisors (see below), whose sum is σ = 66060630048. Its totient is φ = 12582977136.

The previous prime is 31457442859. The next prime is 31457442869. The reversal of 31457442860 is 6824475413.

It is a happy number.

It is a super-2 number, since 2×31457442860² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31457442869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786436052 + ... + 786436091.

It is an arithmetic number, because the mean of its divisors is an integer number (5505052504).

Almost surely, 2^31457442860 is an apocalyptic number.

It is an amenable number.

31457442860 is an abundant number, since it is smaller than the sum of its proper divisors (34603187188).

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

31457442860 is a wasteful number, since it uses less digits than its factorization.

31457442860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572872152 (or 1572872150 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 31457442860 in words is "thirty-one billion, four hundred fifty-seven million, four hundred forty-two thousand, eight hundred sixty".