131135293 has 4 divisors (see below), whose sum is σ = 131939968. Its totient is φ = 130330620.

The previous prime is 131135273. The next prime is 131135309. The reversal of 131135293 is 392531131.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131135293 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 (131135203) 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, 402093 + ... + 402418.

It is an arithmetic number, because the mean of its divisors is an integer number (32984992).

Almost surely, 2^131135293 is an apocalyptic number.

It is an amenable number.

131135293 is a deficient number, since it is larger than the sum of its proper divisors (804675).

131135293 is an equidigital number, since it uses as much as digits as its factorization.

131135293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804674.

The product of its digits is 2430, while the sum is 28.

The square root of 131135293 is about 11451.4319191968. The cubic root of 131135293 is about 508.0500872866.

It can be divided in two parts, 131 and 135293, that added together give a square (135424 = 368²).

The spelling of 131135293 in words is "one hundred thirty-one million, one hundred thirty-five thousand, two hundred ninety-three".