31120032131999 has 2 divisors, whose sum is σ = 31120032132000. Its totient is φ = 31120032131998.

The previous prime is 31120032131983. The next prime is 31120032132001. The reversal of 31120032131999 is 99913123002113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31120032131999 - 2⁴ = 31120032131983 is a prime.

Together with 31120032132001, 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 (31120032131939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560016065999 + 15560016066000.

It is an arithmetic number, because the mean of its divisors is an integer number (15560016066000).

Almost surely, 2^{31120032131999} is an apocalyptic number.

31120032131999 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120032131999 is an equidigital number, since it uses as much as digits as its factorization.

31120032131999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 44.

The spelling of 31120032131999 in words is "thirty-one trillion, one hundred twenty billion, thirty-two million, one hundred thirty-one thousand, nine hundred ninety-nine".