231120132091 has 2 divisors, whose sum is σ = 231120132092. Its totient is φ = 231120132090.

The previous prime is 231120132071. The next prime is 231120132161. The reversal of 231120132091 is 190231021132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231120132091 - 2⁵ = 231120132059 is a prime.

It is a super-2 number, since 2×231120132091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231120132071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115560066045 + 115560066046.

It is an arithmetic number, because the mean of its divisors is an integer number (115560066046).

Almost surely, 2^231120132091 is an apocalyptic number.

231120132091 is a deficient number, since it is larger than the sum of its proper divisors (1).

231120132091 is an equidigital number, since it uses as much as digits as its factorization.

231120132091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 231120132091 in words is "two hundred thirty-one billion, one hundred twenty million, one hundred thirty-two thousand, ninety-one".