131501907 has 32 divisors (see below), whose sum is σ = 211712000. Its totient is φ = 80364960.

The previous prime is 131501897. The next prime is 131501917. The reversal of 131501907 is 709105131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131501897) and next prime (131501917).

It is not a de Polignac number, because 131501907 - 2⁸ = 131501651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131501917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11769 + ... + 20037.

It is an arithmetic number, because the mean of its divisors is an integer number (6616000).

Almost surely, 2^131501907 is an apocalyptic number.

131501907 is a deficient number, since it is larger than the sum of its proper divisors (80210093).

131501907 is a wasteful number, since it uses less digits than its factorization.

131501907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328 (or 8322 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 131501907 is about 11467.4280900296. The cubic root of 131501907 is about 508.5230974272.

The spelling of 131501907 in words is "one hundred thirty-one million, five hundred one thousand, nine hundred seven".