131505701 has 4 divisors (see below), whose sum is σ = 131546400. Its totient is φ = 131465004.

The previous prime is 131505641. The next prime is 131505757. The reversal of 131505701 is 107505131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 107505131 = 181 ⋅593951.

It is a cyclic number.

It is not a de Polignac number, because 131505701 - 2¹⁸ = 131243557 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 (131505001) 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, 15041 + ... + 22118.

It is an arithmetic number, because the mean of its divisors is an integer number (32886600).

Almost surely, 2^131505701 is an apocalyptic number.

It is an amenable number.

131505701 is a deficient number, since it is larger than the sum of its proper divisors (40699).

131505701 is an equidigital number, since it uses as much as digits as its factorization.

131505701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40698.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 131505701 is about 11467.5935138982. The cubic root of 131505701 is about 508.5279878964.

The spelling of 131505701 in words is "one hundred thirty-one million, five hundred five thousand, seven hundred one".