120231091 has 2 divisors, whose sum is σ = 120231092. Its totient is φ = 120231090.

The previous prime is 120231077. The next prime is 120231109. The reversal of 120231091 is 190132021.

Together with next prime (120231109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120231091 - 2⁷ = 120230963 is a prime.

It is not a weakly prime, because it can be changed into another prime (120231491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60115545 + 60115546.

It is an arithmetic number, because the mean of its divisors is an integer number (60115546).

Almost surely, 2^120231091 is an apocalyptic number.

120231091 is a deficient number, since it is larger than the sum of its proper divisors (1).

120231091 is an equidigital number, since it uses as much as digits as its factorization.

120231091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 120231091 is about 10964.9938896472. The cubic root of 120231091 is about 493.5588337344.

The spelling of 120231091 in words is "one hundred twenty million, two hundred thirty-one thousand, ninety-one".