31077464618 has 16 divisors (see below), whose sum is σ = 49362950664. Its totient is φ = 14623319040.

The previous prime is 31077464617. The next prime is 31077464633. The reversal of 31077464618 is 81646477013.

It can be written as a sum of positive squares in 4 ways, for example, as 31036925929 + 40538689 = 176173^2 + 6367^2 .

It is not an unprimeable number, because it can be changed into a prime (31077464617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388328 + ... + 461468.

Almost surely, 2^31077464618 is an apocalyptic number.

31077464618 is a deficient number, since it is larger than the sum of its proper divisors (18285486046).

31077464618 is a wasteful number, since it uses less digits than its factorization.

31077464618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85657.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 31077464618 in words is "thirty-one billion, seventy-seven million, four hundred sixty-four thousand, six hundred eighteen".