131710331 has 2 divisors, whose sum is σ = 131710332. Its totient is φ = 131710330.

The previous prime is 131710307. The next prime is 131710391. The reversal of 131710331 is 133017131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131710331 is a prime.

It is a super-2 number, since 2×131710331² = 34695222584259122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131710391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65855165 + 65855166.

It is an arithmetic number, because the mean of its divisors is an integer number (65855166).

Almost surely, 2^131710331 is an apocalyptic number.

131710331 is a deficient number, since it is larger than the sum of its proper divisors (1).

131710331 is an equidigital number, since it uses as much as digits as its factorization.

131710331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 131710331 is about 11476.5121443756. The cubic root of 131710331 is about 508.7916169092.

Adding to 131710331 its reverse (133017131), we get a palindrome (264727462).

The spelling of 131710331 in words is "one hundred thirty-one million, seven hundred ten thousand, three hundred thirty-one".