131637501 has 16 divisors (see below), whose sum is σ = 201310720. Its totient is φ = 84926880.

The previous prime is 131637449. The next prime is 131637521. The reversal of 131637501 is 105736131.

It is not a de Polignac number, because 131637501 - 2¹¹ = 131635453 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131637521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77800 + ... + 79473.

It is an arithmetic number, because the mean of its divisors is an integer number (12581920).

Almost surely, 2^131637501 is an apocalyptic number.

It is an amenable number.

131637501 is a deficient number, since it is larger than the sum of its proper divisors (69673219).

131637501 is a wasteful number, since it uses less digits than its factorization.

131637501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157313 (or 157307 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 131637501 is about 11473.3387032720. The cubic root of 131637501 is about 508.6978198490.

The spelling of 131637501 in words is "one hundred thirty-one million, six hundred thirty-seven thousand, five hundred one".