231120412091 has 2 divisors, whose sum is σ = 231120412092. Its totient is φ = 231120412090.

The previous prime is 231120412073. The next prime is 231120412097. The reversal of 231120412091 is 190214021132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231120412091 is a prime.

It is a super-2 number, since 2×231120412091² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231120412091.

It is not a weakly prime, because it can be changed into another prime (231120412097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115560206045 + 115560206046.

It is an arithmetic number, because the mean of its divisors is an integer number (115560206046).

Almost surely, 2^231120412091 is an apocalyptic number.

231120412091 is a deficient number, since it is larger than the sum of its proper divisors (1).

231120412091 is an equidigital number, since it uses as much as digits as its factorization.

231120412091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 231120412091 in words is "two hundred thirty-one billion, one hundred twenty million, four hundred twelve thousand, ninety-one".