131314394 has 4 divisors (see below), whose sum is σ = 196971594. Its totient is φ = 65657196.

The previous prime is 131314387. The next prime is 131314399. The reversal of 131314394 is 493413131.

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

It can be written as a sum of positive squares in only one way, i.e., 129390625 + 1923769 = 11375^2 + 1387^2 .

It is not an unprimeable number, because it can be changed into a prime (131314399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32828597 + ... + 32828600.

Almost surely, 2^131314394 is an apocalyptic number.

131314394 is a deficient number, since it is larger than the sum of its proper divisors (65657200).

131314394 is an equidigital number, since it uses as much as digits as its factorization.

131314394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65657199.

The product of its digits is 3888, while the sum is 29.

The square root of 131314394 is about 11459.2492773305. The cubic root of 131314394 is about 508.2812757106.

The spelling of 131314394 in words is "one hundred thirty-one million, three hundred fourteen thousand, three hundred ninety-four".