131564351 has 4 divisors (see below), whose sum is σ = 131714232. Its totient is φ = 131414472.

The previous prime is 131564299. The next prime is 131564353. The reversal of 131564351 is 153465131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153465131 = 23 ⋅6672397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131564351 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 (131564353) 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, 73616 + ... + 75381.

It is an arithmetic number, because the mean of its divisors is an integer number (32928558).

Almost surely, 2^131564351 is an apocalyptic number.

131564351 is a deficient number, since it is larger than the sum of its proper divisors (149881).

131564351 is an equidigital number, since it uses as much as digits as its factorization.

131564351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149880.

The product of its digits is 5400, while the sum is 29.

The square root of 131564351 is about 11470.1504349333. The cubic root of 131564351 is about 508.6035758328.

The spelling of 131564351 in words is "one hundred thirty-one million, five hundred sixty-four thousand, three hundred fifty-one".