31331322033923 has 2 divisors, whose sum is σ = 31331322033924. Its totient is φ = 31331322033922.

The previous prime is 31331322033881. The next prime is 31331322033929. The reversal of 31331322033923 is 32933022313313.

It is a strong prime.

It is an emirp because it is prime and its reverse (32933022313313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31331322033923 - 2¹⁴ = 31331322017539 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31331322033929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665661016961 + 15665661016962.

It is an arithmetic number, because the mean of its divisors is an integer number (15665661016962).

Almost surely, 2^{31331322033923} is an apocalyptic number.

31331322033923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331322033923 is an equidigital number, since it uses as much as digits as its factorization.

31331322033923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 38.

The spelling of 31331322033923 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred twenty-two million, thirty-three thousand, nine hundred twenty-three".