131332031 has 2 divisors, whose sum is σ = 131332032. Its totient is φ = 131332030.

The previous prime is 131331997. The next prime is 131332043. The reversal of 131332031 is 130233131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131332031 - 2²⁶ = 64223167 is a prime.

It is a super-2 number, since 2×131332031² = 34496204733169922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131832031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666015 + 65666016.

It is an arithmetic number, because the mean of its divisors is an integer number (65666016).

Almost surely, 2^131332031 is an apocalyptic number.

131332031 is a deficient number, since it is larger than the sum of its proper divisors (1).

131332031 is an equidigital number, since it uses as much as digits as its factorization.

131332031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131332031 is about 11460.0188045221. The cubic root of 131332031 is about 508.3040306558.

Adding to 131332031 its reverse (130233131), we get a palindrome (261565162).

The spelling of 131332031 in words is "one hundred thirty-one million, three hundred thirty-two thousand, thirty-one".