31990430411 has 2 divisors, whose sum is σ = 31990430412. Its totient is φ = 31990430410.

The previous prime is 31990430393. The next prime is 31990430413. The reversal of 31990430411 is 11403409913.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31990430411 is a prime.

Together with 31990430413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31990430413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15995215205 + 15995215206.

It is an arithmetic number, because the mean of its divisors is an integer number (15995215206).

Almost surely, 2^31990430411 is an apocalyptic number.

31990430411 is a deficient number, since it is larger than the sum of its proper divisors (1).

31990430411 is an equidigital number, since it uses as much as digits as its factorization.

31990430411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 31990430411 in words is "thirty-one billion, nine hundred ninety million, four hundred thirty thousand, four hundred eleven".