120231131 has 4 divisors (see below), whose sum is σ = 120276072. Its totient is φ = 120186192.

The previous prime is 120231121. The next prime is 120231169. The reversal of 120231131 is 131132021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120231131 - 2²² = 116036827 is a prime.

It is a super-2 number, since 2×120231131² = 28911049723078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120231121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18185 + ... + 23898.

It is an arithmetic number, because the mean of its divisors is an integer number (30069018).

Almost surely, 2^120231131 is an apocalyptic number.

120231131 is a deficient number, since it is larger than the sum of its proper divisors (44941).

120231131 is an equidigital number, since it uses as much as digits as its factorization.

120231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44940.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 120231131 is about 10964.9957136335. The cubic root of 120231131 is about 493.5588884689.

Adding to 120231131 its reverse (131132021), we get a palindrome (251363152).

The spelling of 120231131 in words is "one hundred twenty million, two hundred thirty-one thousand, one hundred thirty-one".