231054652561 has 4 divisors (see below), whose sum is σ = 231055778800. Its totient is φ = 231053526324.

The previous prime is 231054652547. The next prime is 231054652579. The reversal of 231054652561 is 165256450132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 231054652561 - 2²³ = 231046263953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231054602561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158451 + ... + 698008.

It is an arithmetic number, because the mean of its divisors is an integer number (57763944700).

Almost surely, 2^231054652561 is an apocalyptic number.

It is an amenable number.

231054652561 is a deficient number, since it is larger than the sum of its proper divisors (1126239).

231054652561 is an equidigital number, since it uses as much as digits as its factorization.

231054652561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126238.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 231054652561 in words is "two hundred thirty-one billion, fifty-four million, six hundred fifty-two thousand, five hundred sixty-one".