31042991586 has 16 divisors (see below), whose sum is σ = 62432834400. Its totient is φ = 10289855328.

The previous prime is 31042991569. The next prime is 31042991599. The reversal of 31042991586 is 68519924013.

It is a Curzon 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, 14450971 + ... + 14453118.

It is an arithmetic number, because the mean of its divisors is an integer number (3902052150).

Almost surely, 2^31042991586 is an apocalyptic number.

31042991586 is an abundant number, since it is smaller than the sum of its proper divisors (31389842814).

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

31042991586 is a wasteful number, since it uses less digits than its factorization.

31042991586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28904273.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 31042991586 in words is "thirty-one billion, forty-two million, nine hundred ninety-one thousand, five hundred eighty-six".