31439474 has 8 divisors (see below), whose sum is σ = 51446448. Its totient is φ = 14290660.

The previous prime is 31439449. The next prime is 31439479. The reversal of 31439474 is 47493413.

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 (31439479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714512 + ... + 714555.

It is an arithmetic number, because the mean of its divisors is an integer number (6430806).

Almost surely, 2^31439474 is an apocalyptic number.

31439474 is a deficient number, since it is larger than the sum of its proper divisors (20006974).

31439474 is a wasteful number, since it uses less digits than its factorization.

31439474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429080.

The product of its digits is 36288, while the sum is 35.

The square root of 31439474 is about 5607.0914028576. The cubic root of 31439474 is about 315.6155729498.

It can be divided in two parts, 31439 and 474, that added together give a palindrome (31913).

The spelling of 31439474 in words is "thirty-one million, four hundred thirty-nine thousand, four hundred seventy-four".