231070135563 has 40 divisors (see below), whose sum is σ = 355980102720. Its totient is φ = 149260942080.

The previous prime is 231070135547. The next prime is 231070135573. The reversal of 231070135563 is 365531070132.

231070135563 is a `hidden beast` number, since 2 + 3 + 10 + 70 + 13 + 5 + 563 = 666.

It is not a de Polignac number, because 231070135563 - 2⁴ = 231070135547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231070135573) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 562318 + ... + 882236.

It is an arithmetic number, because the mean of its divisors is an integer number (8899502568).

Almost surely, 2^231070135563 is an apocalyptic number.

231070135563 is a deficient number, since it is larger than the sum of its proper divisors (124909967157).

231070135563 is a wasteful number, since it uses less digits than its factorization.

231070135563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320209 (or 320200 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The spelling of 231070135563 in words is "two hundred thirty-one billion, seventy million, one hundred thirty-five thousand, five hundred sixty-three".