23261631 has 8 divisors (see below), whose sum is σ = 31146240. Its totient is φ = 15442392.

The previous prime is 23261621. The next prime is 23261633. The reversal of 23261631 is 13616232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23261631 - 2¹⁴ = 23245247 is a prime.

It is a super-2 number, since 2×23261631² = 1082206953560322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23261633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15505 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (3893280).

Almost surely, 2^23261631 is an apocalyptic number.

23261631 is a deficient number, since it is larger than the sum of its proper divisors (7884609).

23261631 is a wasteful number, since it uses less digits than its factorization.

23261631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32685.

The product of its digits is 1296, while the sum is 24.

The square root of 23261631 is about 4823.0313082127. The cubic root of 23261631 is about 285.4609591824.

Adding to 23261631 its reverse (13616232), we get a palindrome (36877863).

The spelling of 23261631 in words is "twenty-three million, two hundred sixty-one thousand, six hundred thirty-one".