231027561001 has 16 divisors (see below), whose sum is σ = 239176018368. Its totient is φ = 223000243200.

The previous prime is 231027560983. The next prime is 231027561031. The reversal of 231027561001 is 100165720132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231027561001 - 2⁵ = 231027560969 is a prime.

It is a super-2 number, since 2×231027561001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231027561031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16867566 + ... + 16881256.

It is an arithmetic number, because the mean of its divisors is an integer number (14948501148).

Almost surely, 2^231027561001 is an apocalyptic number.

It is an amenable number.

231027561001 is a deficient number, since it is larger than the sum of its proper divisors (8148457367).

231027561001 is a wasteful number, since it uses less digits than its factorization.

231027561001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18072.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 231027561001 in words is "two hundred thirty-one billion, twenty-seven million, five hundred sixty-one thousand, one".