623343731 has 2 divisors, whose sum is σ = 623343732. Its totient is φ = 623343730.

The previous prime is 623343703. The next prime is 623343761. The reversal of 623343731 is 137343326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623343731 - 2²⁶ = 556234867 is a prime.

It is a super-2 number, since 2×623343731² = 777114813954000722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_32478413 and since 623343731 and 32478413 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (623343761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311671865 + 311671866.

It is an arithmetic number, because the mean of its divisors is an integer number (311671866).

Almost surely, 2^623343731 is an apocalyptic number.

623343731 is a deficient number, since it is larger than the sum of its proper divisors (1).

623343731 is an equidigital number, since it uses as much as digits as its factorization.

623343731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 32.

The square root of 623343731 is about 24966.8526450572. The cubic root of 623343731 is about 854.2320571707.

The spelling of 623343731 in words is "six hundred twenty-three million, three hundred forty-three thousand, seven hundred thirty-one".