131601757 has 4 divisors (see below), whose sum is σ = 150402016. Its totient is φ = 112801500.

The previous prime is 131601737. The next prime is 131601763. The reversal of 131601757 is 757106131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131601757 - 2¹⁵ = 131568989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131601737) 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, 9400119 + ... + 9400132.

It is an arithmetic number, because the mean of its divisors is an integer number (37600504).

Almost surely, 2^131601757 is an apocalyptic number.

It is an amenable number.

131601757 is a deficient number, since it is larger than the sum of its proper divisors (18800259).

131601757 is an equidigital number, since it uses as much as digits as its factorization.

131601757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18800258.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 131601757 is about 11471.7808992327. The cubic root of 131601757 is about 508.6517728367.

Adding to 131601757 its reverse (757106131), we get a palindrome (888707888).

The spelling of 131601757 in words is "one hundred thirty-one million, six hundred one thousand, seven hundred fifty-seven".