231120131 has 4 divisors (see below), whose sum is σ = 252131064. Its totient is φ = 210109200.

The previous prime is 231120119. The next prime is 231120133. The reversal of 231120131 is 131021132.

231120131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231120131 - 2²² = 226925827 is a prime.

It is a super-2 number, since 2×231120131² = 106833029906914322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231120133) 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, 10505450 + ... + 10505471.

It is an arithmetic number, because the mean of its divisors is an integer number (63032766).

Almost surely, 2^231120131 is an apocalyptic number.

231120131 is a deficient number, since it is larger than the sum of its proper divisors (21010933).

231120131 is a wasteful number, since it uses less digits than its factorization.

231120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21010932.

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

The square root of 231120131 is about 15202.6356596480. The cubic root of 231120131 is about 613.6855890085.

Adding to 231120131 its reverse (131021132), we get a palindrome (362141263).

The spelling of 231120131 in words is "two hundred thirty-one million, one hundred twenty thousand, one hundred thirty-one".