31214394 has 12 divisors (see below), whose sum is σ = 67631226. Its totient is φ = 10404792.

The previous prime is 31214383. The next prime is 31214399. The reversal of 31214394 is 49341213.

It can be written as a sum of positive squares in only one way, i.e., 29975625 + 1238769 = 5475^2 + 1113^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31214399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867049 + ... + 867084.

Almost surely, 2^31214394 is an apocalyptic number.

31214394 is an abundant number, since it is smaller than the sum of its proper divisors (36416832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31214394 is a wasteful number, since it uses less digits than its factorization.

31214394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734141 (or 1734138 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 31214394 is about 5586.9843386213. The cubic root of 31214394 is about 314.8605883465.

It can be divided in two parts, 312 and 14394, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 31214394 in words is "thirty-one million, two hundred fourteen thousand, three hundred ninety-four".