2031327256631 has 2 divisors, whose sum is σ = 2031327256632. Its totient is φ = 2031327256630.

The previous prime is 2031327256613. The next prime is 2031327256633. The reversal of 2031327256631 is 1366527231302.

Together with previous prime (2031327256613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031327256631 is a prime.

It is a super-2 number, since 2×2031327256631² (a number of 25 digits) contains 22 as substring.

Together with 2031327256633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031327256633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015663628315 + 1015663628316.

It is an arithmetic number, because the mean of its divisors is an integer number (1015663628316).

Almost surely, 2^{2031327256631} is an apocalyptic number.

2031327256631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031327256631 is an equidigital number, since it uses as much as digits as its factorization.

2031327256631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 2031327256631 in words is "two trillion, thirty-one billion, three hundred twenty-seven million, two hundred fifty-six thousand, six hundred thirty-one".