31394 has 8 divisors (see below), whose sum is σ = 51408. Its totient is φ = 14260.

The previous prime is 31393. The next prime is 31397. The reversal of 31394 is 49313.

31394 = 2² + 3² + ... + 45².

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

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 31394.

It is not an unprimeable number, because it can be changed into a prime (31391) 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, 692 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (6426).

2³¹³⁹⁴ is an apocalyptic number.

31394 is a deficient number, since it is larger than the sum of its proper divisors (20014).

31394 is a wasteful number, since it uses less digits than its factorization.

31394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its digits is 324, while the sum is 20.

The square root of 31394 is about 177.1835206784. The cubic root of 31394 is about 31.5463330922.

The spelling of 31394 in words is "thirty-one thousand, three hundred ninety-four".