131637701 has 4 divisors (see below), whose sum is σ = 141763692. Its totient is φ = 121511712.

The previous prime is 131637689. The next prime is 131637721. The reversal of 131637701 is 107736131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55860676 + 75777025 = 7474^2 + 8705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131637701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131637721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5062976 + ... + 5063001.

It is an arithmetic number, because the mean of its divisors is an integer number (35440923).

Almost surely, 2^131637701 is an apocalyptic number.

It is an amenable number.

131637701 is a deficient number, since it is larger than the sum of its proper divisors (10125991).

131637701 is a wasteful number, since it uses less digits than its factorization.

131637701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125990.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 131637701 is about 11473.3474191275. The cubic root of 131637701 is about 508.6980774744.

The spelling of 131637701 in words is "one hundred thirty-one million, six hundred thirty-seven thousand, seven hundred one".