23032731 has 16 divisors (see below), whose sum is σ = 32455040. Its totient is φ = 14489280.

The previous prime is 23032703. The next prime is 23032733. The reversal of 23032731 is 13723032.

It is not a de Polignac number, because 23032731 - 2¹³ = 23024539 is a prime.

It is a super-2 number, since 2×23032731² = 1061013394636722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23032698 and 23032707.

It is not an unprimeable number, because it can be changed into a prime (23032733) 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 15 ways as a sum of consecutive naturals, for example, 17196 + ... + 18486.

It is an arithmetic number, because the mean of its divisors is an integer number (2028440).

Almost surely, 2^23032731 is an apocalyptic number.

23032731 is a deficient number, since it is larger than the sum of its proper divisors (9422309).

23032731 is a wasteful number, since it uses less digits than its factorization.

23032731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 23032731 is about 4799.2427527684. The cubic root of 23032731 is about 284.5215363766.

Adding to 23032731 its reverse (13723032), we get a palindrome (36755763).

The spelling of 23032731 in words is "twenty-three million, thirty-two thousand, seven hundred thirty-one".