31137438830 has 16 divisors (see below), whose sum is σ = 58997252880. Its totient is φ = 11799450432.

The previous prime is 31137438817. The next prime is 31137438919. The reversal of 31137438830 is 3883473113.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81940439 + ... + 81940818.

It is an arithmetic number, because the mean of its divisors is an integer number (3687328305).

Almost surely, 2^31137438830 is an apocalyptic number.

31137438830 is a deficient number, since it is larger than the sum of its proper divisors (27859814050).

31137438830 is a wasteful number, since it uses less digits than its factorization.

31137438830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163881283.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 31137438830 in words is "thirty-one billion, one hundred thirty-seven million, four hundred thirty-eight thousand, eight hundred thirty".