131345407 has 2 divisors, whose sum is σ = 131345408. Its totient is φ = 131345406.

The previous prime is 131345381. The next prime is 131345429. The reversal of 131345407 is 704543131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131345407 - 2¹⁵ = 131312639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131345477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65672703 + 65672704.

It is an arithmetic number, because the mean of its divisors is an integer number (65672704).

Almost surely, 2^131345407 is an apocalyptic number.

131345407 is a deficient number, since it is larger than the sum of its proper divisors (1).

131345407 is an equidigital number, since it uses as much as digits as its factorization.

131345407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 131345407 is about 11460.6023838191. The cubic root of 131345407 is about 508.3212867759.

Adding to 131345407 its reverse (704543131), we get a palindrome (835888538).

The spelling of 131345407 in words is "one hundred thirty-one million, three hundred forty-five thousand, four hundred seven".