31257030542 has 8 divisors (see below), whose sum is σ = 46891380600. Its totient is φ = 15626570344.

The previous prime is 31257030523. The next prime is 31257030611. The reversal of 31257030542 is 24503075213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31257030499 and 31257030508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952292 + ... + 984567.

It is an arithmetic number, because the mean of its divisors is an integer number (5861422575).

Almost surely, 2^31257030542 is an apocalyptic number.

31257030542 is a deficient number, since it is larger than the sum of its proper divisors (15634350058).

31257030542 is a wasteful number, since it uses less digits than its factorization.

31257030542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944930.

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 31257030542 in words is "thirty-one billion, two hundred fifty-seven million, thirty thousand, five hundred forty-two".