231565565132 has 24 divisors (see below), whose sum is σ = 442793951040. Its totient is φ = 105087018960.

The previous prime is 231565565131. The next prime is 231565565141.

231565565132 is nontrivially palindromic in base 10.

231565565132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231565565132² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (231565565131) 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 7 ways as a sum of consecutive naturals, for example, 4223858 + ... + 4278329.

It is an arithmetic number, because the mean of its divisors is an integer number (18449747960).

Almost surely, 2^231565565132 is an apocalyptic number.

231565565132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231565565132 is a deficient number, since it is larger than the sum of its proper divisors (211228385908).

231565565132 is a wasteful number, since it uses less digits than its factorization.

231565565132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502821 (or 8502819 counting only the distinct ones).

The product of its digits is 810000, while the sum is 44.

It can be divided in two parts, 231565 and 565132, that added together give a palindrome (796697).

The spelling of 231565565132 in words is "two hundred thirty-one billion, five hundred sixty-five million, five hundred sixty-five thousand, one hundred thirty-two".