31213401024373 has 2 divisors, whose sum is σ = 31213401024374. Its totient is φ = 31213401024372.

The previous prime is 31213401024233. The next prime is 31213401024413. The reversal of 31213401024373 is 37342010431213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30152816180964 + 1060584843409 = 5491158^2 + 1029847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31213401024373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213401094373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606700512186 + 15606700512187.

It is an arithmetic number, because the mean of its divisors is an integer number (15606700512187).

Almost surely, 2^{31213401024373} is an apocalyptic number.

It is an amenable number.

31213401024373 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213401024373 is an equidigital number, since it uses as much as digits as its factorization.

31213401024373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

Adding to 31213401024373 its reverse (37342010431213), we get a palindrome (68555411455586).

The spelling of 31213401024373 in words is "thirty-one trillion, two hundred thirteen billion, four hundred one million, twenty-four thousand, three hundred seventy-three".