923390431 has 2 divisors, whose sum is σ = 923390432. Its totient is φ = 923390430.

The previous prime is 923390393. The next prime is 923390437. The reversal of 923390431 is 134093329.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 923390431 - 2¹⁹ = 922866143 is a prime.

It is a super-2 number, since 2×923390431² = 1705299776124731522, which contains 22 as substring.

It is equal to p_47143771 and since 923390431 and 47143771 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923390437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461695215 + 461695216.

It is an arithmetic number, because the mean of its divisors is an integer number (461695216).

Almost surely, 2^923390431 is an apocalyptic number.

923390431 is a deficient number, since it is larger than the sum of its proper divisors (1).

923390431 is an equidigital number, since it uses as much as digits as its factorization.

923390431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 923390431 is about 30387.3399790110. The cubic root of 923390431 is about 973.7821062479.

The spelling of 923390431 in words is "nine hundred twenty-three million, three hundred ninety thousand, four hundred thirty-one".