2031320231999 has 2 divisors, whose sum is σ = 2031320232000. Its totient is φ = 2031320231998.

The previous prime is 2031320231947. The next prime is 2031320232013. The reversal of 2031320231999 is 9991320231302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2031320231999 - 2²⁴ = 2031303454783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031320231929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015660115999 + 1015660116000.

It is an arithmetic number, because the mean of its divisors is an integer number (1015660116000).

Almost surely, 2^{2031320231999} is an apocalyptic number.

2031320231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031320231999 is an equidigital number, since it uses as much as digits as its factorization.

2031320231999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 2031320231999 in words is "two trillion, thirty-one billion, three hundred twenty million, two hundred thirty-one thousand, nine hundred ninety-nine".