231256561055 has 8 divisors (see below), whose sum is σ = 298854632832. Its totient is φ = 170774075808.

The previous prime is 231256561051. The next prime is 231256561079. The reversal of 231256561055 is 550165652132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231256561055 - 2² = 231256561051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231256561051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778896559 + ... + 1778896688.

It is an arithmetic number, because the mean of its divisors is an integer number (37356829104).

Almost surely, 2^231256561055 is an apocalyptic number.

231256561055 is a deficient number, since it is larger than the sum of its proper divisors (67598071777).

231256561055 is a wasteful number, since it uses less digits than its factorization.

231256561055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557793265.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 231256561055 in words is "two hundred thirty-one billion, two hundred fifty-six million, five hundred sixty-one thousand, fifty-five".