31274977947213 has 128 divisors (see below), whose sum is σ = 57854788153344. Its totient is φ = 14502140467200.

The previous prime is 31274977947149. The next prime is 31274977947221.

31274977947213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31274977947213 - 2⁶ = 31274977947149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274977947113) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17247673 + ... + 18974513.

It is an arithmetic number, because the mean of its divisors is an integer number (451990532448).

Almost surely, 2^{31274977947213} is an apocalyptic number.

31274977947213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31274977947213 is a deficient number, since it is larger than the sum of its proper divisors (26579810206131).

31274977947213 is a wasteful number, since it uses less digits than its factorization.

31274977947213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727075.

The product of its digits is 112021056, while the sum is 66.

The spelling of 31274977947213 in words is "thirty-one trillion, two hundred seventy-four billion, nine hundred seventy-seven million, nine hundred forty-seven thousand, two hundred thirteen".