23731961 has 4 divisors (see below), whose sum is σ = 25889424. Its totient is φ = 21574500.

The previous prime is 23731951. The next prime is 23732011. The reversal of 23731961 is 16913732.

It is a happy number.

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 23731961 - 2¹⁴ = 23715577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23731951) 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, 1078715 + ... + 1078736.

It is an arithmetic number, because the mean of its divisors is an integer number (6472356).

Almost surely, 2^23731961 is an apocalyptic number.

It is an amenable number.

23731961 is a deficient number, since it is larger than the sum of its proper divisors (2157463).

23731961 is a wasteful number, since it uses less digits than its factorization.

23731961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157462.

The product of its digits is 6804, while the sum is 32.

The square root of 23731961 is about 4871.5460584911. The cubic root of 23731961 is about 287.3720605288.

It can be divided in two parts, 2373 and 1961, that added together give a palindrome (4334).

The spelling of 23731961 in words is "twenty-three million, seven hundred thirty-one thousand, nine hundred sixty-one".