623303431 has 2 divisors, whose sum is σ = 623303432. Its totient is φ = 623303430.

The previous prime is 623303423. The next prime is 623303441. The reversal of 623303431 is 134303326.

623303431 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 623303431 - 2³ = 623303423 is a prime.

It is a super-2 number, since 2×623303431² = 777014334192743522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 623303396 and 623303405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623303411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311651715 + 311651716.

It is an arithmetic number, because the mean of its divisors is an integer number (311651716).

Almost surely, 2^623303431 is an apocalyptic number.

623303431 is a deficient number, since it is larger than the sum of its proper divisors (1).

623303431 is an equidigital number, since it uses as much as digits as its factorization.

623303431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 623303431 is about 24966.0455619227. The cubic root of 623303431 is about 854.2136476950.

Adding to 623303431 its reverse (134303326), we get a palindrome (757606757).

The spelling of 623303431 in words is "six hundred twenty-three million, three hundred three thousand, four hundred thirty-one".