131423137 has 2 divisors, whose sum is σ = 131423138. Its totient is φ = 131423136.

The previous prime is 131423111. The next prime is 131423161. The reversal of 131423137 is 731324131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91087936 + 40335201 = 9544^2 + 6351^2 .

It is a cyclic number.

It is not a de Polignac number, because 131423137 - 2⁷ = 131423009 is a prime.

It is not a weakly prime, because it can be changed into another prime (131423197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65711568 + 65711569.

It is an arithmetic number, because the mean of its divisors is an integer number (65711569).

Almost surely, 2^131423137 is an apocalyptic number.

It is an amenable number.

131423137 is a deficient number, since it is larger than the sum of its proper divisors (1).

131423137 is an equidigital number, since it uses as much as digits as its factorization.

131423137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 131423137 is about 11463.9930652456. The cubic root of 131423137 is about 508.4215415742.

Adding to 131423137 its reverse (731324131), we get a palindrome (862747268).

The spelling of 131423137 in words is "one hundred thirty-one million, four hundred twenty-three thousand, one hundred thirty-seven".