131423315 has 4 divisors (see below), whose sum is σ = 157707984. Its totient is φ = 105138648.

The previous prime is 131423309. The next prime is 131423317. The reversal of 131423315 is 513324131.

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

It is a cyclic number.

It is not a de Polignac number, because 131423315 - 2¹⁴ = 131406931 is a prime.

It is a super-3 number, since 3×131423315³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131423317) 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, 13142327 + ... + 13142336.

It is an arithmetic number, because the mean of its divisors is an integer number (39426996).

Almost surely, 2^131423315 is an apocalyptic number.

131423315 is a deficient number, since it is larger than the sum of its proper divisors (26284669).

131423315 is an equidigital number, since it uses as much as digits as its factorization.

131423315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26284668.

The product of its digits is 1080, while the sum is 23.

The square root of 131423315 is about 11464.0008286811. Note that the first 3 decimals coincide. The cubic root of 131423315 is about 508.4217711101.

Adding to 131423315 its reverse (513324131), we get a palindrome (644747446).

The spelling of 131423315 in words is "one hundred thirty-one million, four hundred twenty-three thousand, three hundred fifteen".