3122431399 has 2 divisors, whose sum is σ = 3122431400. Its totient is φ = 3122431398.

The previous prime is 3122431391. The next prime is 3122431439. The reversal of 3122431399 is 9931342213.

3122431399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3122431399 - 2³ = 3122431391 is a prime.

It is a super-2 number, since 2×3122431399² = 19499155682922194402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3122431391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561215699 + 1561215700.

It is an arithmetic number, because the mean of its divisors is an integer number (1561215700).

Almost surely, 2^3122431399 is an apocalyptic number.

3122431399 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122431399 is an equidigital number, since it uses as much as digits as its factorization.

3122431399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 3122431399 is about 55878.7204488435. The cubic root of 3122431399 is about 1461.6081921133.

The spelling of 3122431399 in words is "three billion, one hundred twenty-two million, four hundred thirty-one thousand, three hundred ninety-nine".