131232131 has 4 divisors (see below), whose sum is σ = 134024352. Its totient is φ = 128439912.

The previous prime is 131232113. The next prime is 131232133.

131232131 is nontrivially palindromic in base 10.

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 131232131 - 2¹⁸ = 130969987 is a prime.

It is a super-2 number, since 2×131232131² = 34443744413602322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131232133) 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, 1396040 + ... + 1396133.

It is an arithmetic number, because the mean of its divisors is an integer number (33506088).

Almost surely, 2^131232131 is an apocalyptic number.

131232131 is a deficient number, since it is larger than the sum of its proper divisors (2792221).

131232131 is an equidigital number, since it uses as much as digits as its factorization.

131232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792220.

The product of its digits is 108, while the sum is 17.

The square root of 131232131 is about 11455.6593437480. The cubic root of 131232131 is about 508.1751145207.

The spelling of 131232131 in words is "one hundred thirty-one million, two hundred thirty-two thousand, one hundred thirty-one".