31539438742 has 8 divisors (see below), whose sum is σ = 54067609296. Its totient is φ = 13516902312.

The previous prime is 31539438739. The next prime is 31539438757. The reversal of 31539438742 is 24783493513.

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

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, 1126408513 + ... + 1126408540.

It is an arithmetic number, because the mean of its divisors is an integer number (6758451162).

Almost surely, 2^31539438742 is an apocalyptic number.

31539438742 is a deficient number, since it is larger than the sum of its proper divisors (22528170554).

31539438742 is a wasteful number, since it uses less digits than its factorization.

31539438742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252817062.

The product of its digits is 2177280, while the sum is 49.

The spelling of 31539438742 in words is "thirty-one billion, five hundred thirty-nine million, four hundred thirty-eight thousand, seven hundred forty-two".