31442332 has 12 divisors (see below), whose sum is σ = 55114416. Its totient is φ = 15695360.

The previous prime is 31442273. The next prime is 31442347. The reversal of 31442332 is 23324413.

It is a happy number.

It is a congruent number.

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, 3568 + ... + 8695.

It is an arithmetic number, because the mean of its divisors is an integer number (4592868).

Almost surely, 2^31442332 is an apocalyptic number.

It is an amenable number.

31442332 is a deficient number, since it is larger than the sum of its proper divisors (23672084).

31442332 is a wasteful number, since it uses less digits than its factorization.

31442332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12908 (or 12906 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 31442332 is about 5607.3462529079. The cubic root of 31442332 is about 315.6251363199.

Adding to 31442332 its reverse (23324413), we get a palindrome (54766745).

It can be divided in two parts, 3144 and 2332, that added together give a square (5476 = 74²).

The spelling of 31442332 in words is "thirty-one million, four hundred forty-two thousand, three hundred thirty-two".