131025977 has 2 divisors, whose sum is σ = 131025978. Its totient is φ = 131025976.

The previous prime is 131025943. The next prime is 131026087. The reversal of 131025977 is 779520131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77018176 + 54007801 = 8776^2 + 7349^2 .

It is a cyclic number.

It is not a de Polignac number, because 131025977 - 2¹⁰ = 131024953 is a prime.

It is not a weakly prime, because it can be changed into another prime (131025907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65512988 + 65512989.

It is an arithmetic number, because the mean of its divisors is an integer number (65512989).

Almost surely, 2^131025977 is an apocalyptic number.

It is an amenable number.

131025977 is a deficient number, since it is larger than the sum of its proper divisors (1).

131025977 is an equidigital number, since it uses as much as digits as its factorization.

131025977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 131025977 is about 11446.6578965216. The cubic root of 131025977 is about 507.9088757647.

The spelling of 131025977 in words is "one hundred thirty-one million, twenty-five thousand, nine hundred seventy-seven".