23303131 has 4 divisors (see below), whose sum is σ = 23326000. Its totient is φ = 23280264.

The previous prime is 23303113. The next prime is 23303149. The reversal of 23303131 is 13130332.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23303113) and next prime (23303149).

It is a cyclic number.

It is not a de Polignac number, because 23303131 - 2¹⁵ = 23270363 is a prime.

It is a super-2 number, since 2×23303131² = 1086071828806322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23303191) 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, 9831 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (5831500).

Almost surely, 2^23303131 is an apocalyptic number.

23303131 is a deficient number, since it is larger than the sum of its proper divisors (22869).

23303131 is a wasteful number, since it uses less digits than its factorization.

23303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22868.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 23303131 is about 4827.3316645948. The cubic root of 23303131 is about 285.6306175607.

Adding to 23303131 its reverse (13130332), we get a palindrome (36433463).

The spelling of 23303131 in words is "twenty-three million, three hundred three thousand, one hundred thirty-one".