131120231 has 8 divisors (see below), whose sum is σ = 143126544. Its totient is φ = 119128320.

The previous prime is 131120219. The next prime is 131120233. The reversal of 131120231 is 132021131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131120231 is a prime.

It is a super-2 number, since 2×131120231² = 34385029954986722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26225 + ... + 30821.

It is an arithmetic number, because the mean of its divisors is an integer number (17890818).

Almost surely, 2^131120231 is an apocalyptic number.

131120231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131120231 is a deficient number, since it is larger than the sum of its proper divisors (12006313).

131120231 is a wasteful number, since it uses less digits than its factorization.

131120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201.

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

The square root of 131120231 is about 11450.7742532983. The cubic root of 131120231 is about 508.0306352554.

Adding to 131120231 its reverse (132021131), we get a palindrome (263141362).

The spelling of 131120231 in words is "one hundred thirty-one million, one hundred twenty thousand, two hundred thirty-one".