31612672686 has 32 divisors (see below), whose sum is σ = 72366916608. Its totient is φ = 9018519840.

The previous prime is 31612672607. The next prime is 31612672687. The reversal of 31612672686 is 68627621613.

It is a super-2 number, since 2×31612672686² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31612672687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541590 + ... + 597113.

It is an arithmetic number, because the mean of its divisors is an integer number (2261466144).

Almost surely, 2^31612672686 is an apocalyptic number.

31612672686 is an abundant number, since it is smaller than the sum of its proper divisors (40754243922).

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

31612672686 is a wasteful number, since it uses less digits than its factorization.

31612672686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139376.

The product of its digits is 870912, while the sum is 48.

The spelling of 31612672686 in words is "thirty-one billion, six hundred twelve million, six hundred seventy-two thousand, six hundred eighty-six".