31242274 has 8 divisors (see below), whose sum is σ = 53558208. Its totient is φ = 13389540.

The previous prime is 31242247. The next prime is 31242307. The reversal of 31242274 is 47224213.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115782 + ... + 1115809.

It is an arithmetic number, because the mean of its divisors is an integer number (6694776).

Almost surely, 2^31242274 is an apocalyptic number.

31242274 is a deficient number, since it is larger than the sum of its proper divisors (22315934).

31242274 is a wasteful number, since it uses less digits than its factorization.

31242274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231600.

The product of its digits is 2688, while the sum is 25.

The square root of 31242274 is about 5589.4788665850. The cubic root of 31242274 is about 314.9543026008.

Adding to 31242274 its reverse (47224213), we get a palindrome (78466487).

The spelling of 31242274 in words is "thirty-one million, two hundred forty-two thousand, two hundred seventy-four".