31323394 has 16 divisors (see below), whose sum is σ = 47729088. Its totient is φ = 15415792.

The previous prime is 31323379. The next prime is 31323403. The reversal of 31323394 is 49332313.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41787 + ... + 42529.

It is an arithmetic number, because the mean of its divisors is an integer number (2983068).

Almost surely, 2^31323394 is an apocalyptic number.

31323394 is a deficient number, since it is larger than the sum of its proper divisors (16405694).

31323394 is a wasteful number, since it uses less digits than its factorization.

31323394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049.

The product of its digits is 5832, while the sum is 28.

The square root of 31323394 is about 5596.7306528008. The cubic root of 31323394 is about 315.2266580668.

The spelling of 31323394 in words is "thirty-one million, three hundred twenty-three thousand, three hundred ninety-four".