23700731 has 2 divisors, whose sum is σ = 23700732. Its totient is φ = 23700730.

The previous prime is 23700679. The next prime is 23700739. The reversal of 23700731 is 13700732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23700731 - 2⁶ = 23700667 is a prime.

It is a super-2 number, since 2×23700731² = 1123449299868722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23700697 and 23700706.

It is not a weakly prime, because it can be changed into another prime (23700739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11850365 + 11850366.

It is an arithmetic number, because the mean of its divisors is an integer number (11850366).

Almost surely, 2^23700731 is an apocalyptic number.

23700731 is a deficient number, since it is larger than the sum of its proper divisors (1).

23700731 is an equidigital number, since it uses as much as digits as its factorization.

23700731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 23700731 is about 4868.3396553651. The cubic root of 23700731 is about 287.2459497389.

Subtracting from 23700731 its reverse (13700732), we obtain a palindrome (9999999).

The spelling of 23700731 in words is "twenty-three million, seven hundred thousand, seven hundred thirty-one".