131268394 has 8 divisors (see below), whose sum is σ = 196952580. Its totient is φ = 65617536.

The previous prime is 131268391. The next prime is 131268409. The reversal of 131268394 is 493862131.

It can be written as a sum of positive squares in 2 ways, for example, as 99740169 + 31528225 = 9987^2 + 5615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131268391) 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, 7642 + ... + 17914.

Almost surely, 2^131268394 is an apocalyptic number.

131268394 is a deficient number, since it is larger than the sum of its proper divisors (65684186).

131268394 is a wasteful number, since it uses less digits than its factorization.

131268394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16664.

The product of its digits is 31104, while the sum is 37.

The square root of 131268394 is about 11457.2419892398. The cubic root of 131268394 is about 508.2219177361.

The spelling of 131268394 in words is "one hundred thirty-one million, two hundred sixty-eight thousand, three hundred ninety-four".