31442274 has 24 divisors (see below), whose sum is σ = 68245632. Its totient is φ = 10462200.

The previous prime is 31442273. The next prime is 31442347. The reversal of 31442274 is 47224413.

It is not an unprimeable number, because it can be changed into a prime (31442273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12199 + ... + 14549.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^31442274 is an apocalyptic number.

31442274 is an abundant number, since it is smaller than the sum of its proper divisors (36803358).

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

31442274 is a wasteful number, since it uses less digits than its factorization.

31442274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102 (or 3099 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 31442274 is about 5607.3410811186. The cubic root of 31442274 is about 315.6249422475.

Adding to 31442274 its reverse (47224413), we get a palindrome (78666687).

The spelling of 31442274 in words is "thirty-one million, four hundred forty-two thousand, two hundred seventy-four".