923400431 has 2 divisors, whose sum is σ = 923400432. Its totient is φ = 923400430.

The previous prime is 923400409. The next prime is 923400449. The reversal of 923400431 is 134004329.

It is a strong prime.

It is an emirp because it is prime and its reverse (134004329) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 923400431 - 2²⁶ = 856291567 is a prime.

It is a super-2 number, since 2×923400431² = 1705336711941971522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 923400431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923450431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461700215 + 461700216.

It is an arithmetic number, because the mean of its divisors is an integer number (461700216).

Almost surely, 2^923400431 is an apocalyptic number.

923400431 is a deficient number, since it is larger than the sum of its proper divisors (1).

923400431 is an equidigital number, since it uses as much as digits as its factorization.

923400431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 923400431 is about 30387.5045207730. The cubic root of 923400431 is about 973.7856214767.

The spelling of 923400431 in words is "nine hundred twenty-three million, four hundred thousand, four hundred thirty-one".