23013631 has 4 divisors (see below), whose sum is σ = 24367392. Its totient is φ = 21659872.

The previous prime is 23013611. The next prime is 23013637. The reversal of 23013631 is 13631032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23013631 - 2⁹ = 23013119 is a prime.

It is a super-2 number, since 2×23013631² = 1059254423608322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23013599 and 23013608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013637) 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, 676855 + ... + 676888.

It is an arithmetic number, because the mean of its divisors is an integer number (6091848).

Almost surely, 2^23013631 is an apocalyptic number.

23013631 is a deficient number, since it is larger than the sum of its proper divisors (1353761).

23013631 is a wasteful number, since it uses less digits than its factorization.

23013631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353760.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 23013631 is about 4797.2524428052. The cubic root of 23013631 is about 284.4428676885.

Adding to 23013631 its reverse (13631032), we get a palindrome (36644663).

It can be divided in two parts, 230 and 13631, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 23013631 in words is "twenty-three million, thirteen thousand, six hundred thirty-one".