31023321002131 has 2 divisors, whose sum is σ = 31023321002132. Its totient is φ = 31023321002130.

The previous prime is 31023321002077. The next prime is 31023321002171. The reversal of 31023321002131 is 13120012332013.

It is a strong prime.

It is an emirp because it is prime and its reverse (13120012332013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31023321002131 - 2⁴¹ = 28824297746579 is a prime.

It is a super-2 number, since 2×31023321002131² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31023321002171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511660501065 + 15511660501066.

It is an arithmetic number, because the mean of its divisors is an integer number (15511660501066).

Almost surely, 2^{31023321002131} is an apocalyptic number.

31023321002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023321002131 is an equidigital number, since it uses as much as digits as its factorization.

31023321002131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31023321002131 its reverse (13120012332013), we get a palindrome (44143333334144).

The spelling of 31023321002131 in words is "thirty-one trillion, twenty-three billion, three hundred twenty-one million, two thousand, one hundred thirty-one".