23230155531 has 16 divisors (see below), whose sum is σ = 33812081280. Its totient is φ = 14069397120.

The previous prime is 23230155449. The next prime is 23230155539. The reversal of 23230155531 is 13555103232.

It is not a de Polignac number, because 23230155531 - 2¹⁴ = 23230139147 is a prime.

It is a super-2 number, since 2×23230155531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23230155539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187245 + ... + 285518.

It is an arithmetic number, because the mean of its divisors is an integer number (2113255080).

Almost surely, 2^23230155531 is an apocalyptic number.

23230155531 is a deficient number, since it is larger than the sum of its proper divisors (10581925749).

23230155531 is a wasteful number, since it uses less digits than its factorization.

23230155531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474266.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 23230155531 its reverse (13555103232), we get a palindrome (36785258763).

The spelling of 23230155531 in words is "twenty-three billion, two hundred thirty million, one hundred fifty-five thousand, five hundred thirty-one".