23012831 has 4 divisors (see below), whose sum is σ = 23022792. Its totient is φ = 23002872.

The previous prime is 23012827. The next prime is 23012833. The reversal of 23012831 is 13821032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23012831 - 2² = 23012827 is a prime.

It is a super-2 number, since 2×23012831² = 1059180781269122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485 + ... + 6801.

It is an arithmetic number, because the mean of its divisors is an integer number (5755698).

Almost surely, 2^23012831 is an apocalyptic number.

23012831 is a deficient number, since it is larger than the sum of its proper divisors (9961).

23012831 is an equidigital number, since it uses as much as digits as its factorization.

23012831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9960.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 23012831 is about 4797.1690610192. The cubic root of 23012831 is about 284.4395717153.

Adding to 23012831 its reverse (13821032), we get a palindrome (36833863).

The spelling of 23012831 in words is "twenty-three million, twelve thousand, eight hundred thirty-one".