31442496 has 56 divisors (see below), whose sum is σ = 86075520. Its totient is φ = 10117632.

The previous prime is 31442491. The next prime is 31442513. The reversal of 31442496 is 69424413.

It is not an unprimeable number, because it can be changed into a prime (31442491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2745 + ... + 8391.

Almost surely, 2^31442496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31442496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43037760).

31442496 is an abundant number, since it is smaller than the sum of its proper divisors (54633024).

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

31442496 is a wasteful number, since it uses less digits than its factorization.

31442496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691 (or 5681 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 31442496 is about 5607.3608765622. The cubic root of 31442496 is about 315.6256850751.

The spelling of 31442496 in words is "thirty-one million, four hundred forty-two thousand, four hundred ninety-six".