131377157 has 2 divisors, whose sum is σ = 131377158. Its totient is φ = 131377156.

The previous prime is 131377123. The next prime is 131377159. The reversal of 131377157 is 751773131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78393316 + 52983841 = 8854^2 + 7279^2 .

It is a cyclic number.

It is not a de Polignac number, because 131377157 - 2¹⁴ = 131360773 is a prime.

Together with 131377159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131377159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65688578 + 65688579.

It is an arithmetic number, because the mean of its divisors is an integer number (65688579).

Almost surely, 2^131377157 is an apocalyptic number.

It is an amenable number.

131377157 is a deficient number, since it is larger than the sum of its proper divisors (1).

131377157 is an equidigital number, since it uses as much as digits as its factorization.

131377157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15435, while the sum is 35.

The square root of 131377157 is about 11461.9874803631. The cubic root of 131377157 is about 508.3622421494.

The spelling of 131377157 in words is "one hundred thirty-one million, three hundred seventy-seven thousand, one hundred fifty-seven".