31312001330213 has 16 divisors (see below), whose sum is σ = 33304886173440. Its totient is φ = 29335985527296.

The previous prime is 31312001330201. The next prime is 31312001330231. The reversal of 31312001330213 is 31203310021313.

It is not a de Polignac number, because 31312001330213 - 2⁸ = 31312001329957 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 (31312001330293) 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, 9602606 + ... + 12443232.

It is an arithmetic number, because the mean of its divisors is an integer number (2081555385840).

Almost surely, 2^{31312001330213} is an apocalyptic number.

It is an amenable number.

31312001330213 is a deficient number, since it is larger than the sum of its proper divisors (1992884843227).

31312001330213 is a wasteful number, since it uses less digits than its factorization.

31312001330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843596.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31312001330213 its reverse (31203310021313), we get a palindrome (62515311351526).

The spelling of 31312001330213 in words is "thirty-one trillion, three hundred twelve billion, one million, three hundred thirty thousand, two hundred thirteen".