131890207 has 2 divisors, whose sum is σ = 131890208. Its totient is φ = 131890206.

The previous prime is 131890147. The next prime is 131890219. The reversal of 131890207 is 702098131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131890207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131890247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65945103 + 65945104.

It is an arithmetic number, because the mean of its divisors is an integer number (65945104).

Almost surely, 2^131890207 is an apocalyptic number.

131890207 is a deficient number, since it is larger than the sum of its proper divisors (1).

131890207 is an equidigital number, since it uses as much as digits as its factorization.

131890207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 131890207 is about 11484.3461720727. The cubic root of 131890207 is about 509.0231294242.

The spelling of 131890207 in words is "one hundred thirty-one million, eight hundred ninety thousand, two hundred seven".