396273431 has 2 divisors, whose sum is σ = 396273432. Its totient is φ = 396273430.

The previous prime is 396273391. The next prime is 396273433. The reversal of 396273431 is 134372693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396273431 is a prime.

It is a super-2 number, since 2×396273431² = 314065264233023522, which contains 22 as substring.

Together with 396273433, 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 (396273433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198136715 + 198136716.

It is an arithmetic number, because the mean of its divisors is an integer number (198136716).

Almost surely, 2^396273431 is an apocalyptic number.

396273431 is a deficient number, since it is larger than the sum of its proper divisors (1).

396273431 is an equidigital number, since it uses as much as digits as its factorization.

396273431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 38.

The square root of 396273431 is about 19906.6177689732. The cubic root of 396273431 is about 734.5110240529.

The spelling of 396273431 in words is "three hundred ninety-six million, two hundred seventy-three thousand, four hundred thirty-one".