523402313 has 4 divisors (see below), whose sum is σ = 598174080. Its totient is φ = 448630548.

The previous prime is 523402279. The next prime is 523402379. The reversal of 523402313 is 313204325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 523402313 - 2⁶ = 523402249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523408313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37385873 + ... + 37385886.

It is an arithmetic number, because the mean of its divisors is an integer number (149543520).

Almost surely, 2^523402313 is an apocalyptic number.

It is an amenable number.

523402313 is a deficient number, since it is larger than the sum of its proper divisors (74771767).

523402313 is an equidigital number, since it uses as much as digits as its factorization.

523402313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74771766.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 523402313 is about 22877.9875207589. The cubic root of 523402313 is about 805.8951568890.

Adding to 523402313 its reverse (313204325), we get a palindrome (836606638).

The spelling of 523402313 in words is "five hundred twenty-three million, four hundred two thousand, three hundred thirteen".