131032231 has 6 divisors (see below), whose sum is σ = 144027296. Its totient is φ = 119120100.

The previous prime is 131032211. The next prime is 131032259. The reversal of 131032231 is 132230131.

It is not a de Polignac number, because 131032231 - 2⁵ = 131032199 is a prime.

It is a super-2 number, since 2×131032231² = 34338891121674722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 541335 + ... + 541576.

Almost surely, 2^131032231 is an apocalyptic number.

131032231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131032231 is a deficient number, since it is larger than the sum of its proper divisors (12995065).

131032231 is a wasteful number, since it uses less digits than its factorization.

131032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082933 (or 1082922 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131032231 is about 11446.9310734362. The cubic root of 131032231 is about 507.9169566345.

Adding to 131032231 its reverse (132230131), we get a palindrome (263262362).

The spelling of 131032231 in words is "one hundred thirty-one million, thirty-two thousand, two hundred thirty-one".