11931394 has 4 divisors (see below), whose sum is σ = 17897094. Its totient is φ = 5965696.

The previous prime is 11931371. The next prime is 11931397. The reversal of 11931394 is 49313911.

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., 10336225 + 1595169 = 3215^2 + 1263^2 .

It is not an unprimeable number, because it can be changed into a prime (11931397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2982847 + ... + 2982850.

Almost surely, 2^11931394 is an apocalyptic number.

11931394 is a deficient number, since it is larger than the sum of its proper divisors (5965700).

11931394 is an equidigital number, since it uses as much as digits as its factorization.

11931394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965699.

The product of its digits is 2916, while the sum is 31.

The square root of 11931394 is about 3454.1849979409. The cubic root of 11931394 is about 228.5057129162.

It can be divided in two parts, 119 and 31394, that added together give a palindrome (31513).

The spelling of 11931394 in words is "eleven million, nine hundred thirty-one thousand, three hundred ninety-four".