131402137 has 2 divisors, whose sum is σ = 131402138. Its totient is φ = 131402136.

The previous prime is 131402107. The next prime is 131402143. The reversal of 131402137 is 731204131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76405081 + 54997056 = 8741^2 + 7416^2 .

It is a cyclic number.

It is not a de Polignac number, because 131402137 - 2⁷ = 131402009 is a prime.

It is not a weakly prime, because it can be changed into another prime (131402107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701068 + 65701069.

It is an arithmetic number, because the mean of its divisors is an integer number (65701069).

Almost surely, 2^131402137 is an apocalyptic number.

It is an amenable number.

131402137 is a deficient number, since it is larger than the sum of its proper divisors (1).

131402137 is an equidigital number, since it uses as much as digits as its factorization.

131402137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 131402137 is about 11463.0771174236. The cubic root of 131402137 is about 508.3944600386.

Adding to 131402137 its reverse (731204131), we get a palindrome (862606268).

The spelling of 131402137 in words is "one hundred thirty-one million, four hundred two thousand, one hundred thirty-seven".