231563560532 has 6 divisors (see below), whose sum is σ = 405236230938. Its totient is φ = 115781780264.

The previous prime is 231563560531. The next prime is 231563560559. The reversal of 231563560532 is 235065365132.

It can be written as a sum of positive squares in only one way, i.e., 181166004496 + 50397556036 = 425636^2 + 224494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231563560532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231563560531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28945445063 + ... + 28945445070.

It is an arithmetic number, because the mean of its divisors is an integer number (67539371823).

Almost surely, 2^231563560532 is an apocalyptic number.

It is an amenable number.

231563560532 is a deficient number, since it is larger than the sum of its proper divisors (173672670406).

231563560532 is a wasteful number, since it uses less digits than its factorization.

231563560532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57890890137 (or 57890890135 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 41.

The spelling of 231563560532 in words is "two hundred thirty-one billion, five hundred sixty-three million, five hundred sixty thousand, five hundred thirty-two".