23263156531 has 4 divisors (see below), whose sum is σ = 23285042032. Its totient is φ = 23241271032.

The previous prime is 23263156529. The next prime is 23263156571. The reversal of 23263156531 is 13565136232.

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 23263156531 - 2¹ = 23263156529 is a prime.

It is a super-2 number, since 2×23263156531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23263156571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10941156 + ... + 10943281.

It is an arithmetic number, because the mean of its divisors is an integer number (5821260508).

Almost surely, 2^23263156531 is an apocalyptic number.

23263156531 is a deficient number, since it is larger than the sum of its proper divisors (21885501).

23263156531 is a wasteful number, since it uses less digits than its factorization.

23263156531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21885500.

The product of its digits is 97200, while the sum is 37.

The spelling of 23263156531 in words is "twenty-three billion, two hundred sixty-three million, one hundred fifty-six thousand, five hundred thirty-one".