31976978674151 has 32 divisors (see below), whose sum is σ = 37467960265728. Its totient is φ = 26723231458560.

The previous prime is 31976978674141. The next prime is 31976978674169. The reversal of 31976978674151 is 15147687967913.

It is a de Polignac number, because none of the positive numbers 2^k-31976978674151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31976978674141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532555691 + ... + 532615731.

It is an arithmetic number, because the mean of its divisors is an integer number (1170873758304).

Almost surely, 2^{31976978674151} is an apocalyptic number.

31976978674151 is a deficient number, since it is larger than the sum of its proper divisors (5490981591577).

31976978674151 is a wasteful number, since it uses less digits than its factorization.

31976978674151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69071.

The product of its digits is 480090240, while the sum is 74.

The spelling of 31976978674151 in words is "thirty-one trillion, nine hundred seventy-six billion, nine hundred seventy-eight million, six hundred seventy-four thousand, one hundred fifty-one".