31442450 has 54 divisors (see below), whose sum is σ = 64382877. Its totient is φ = 11419200.

The previous prime is 31442441. The next prime is 31442479. The reversal of 31442450 is 5424413.

It can be written as a sum of positive squares in 14 ways, for example, as 25877569 + 5564881 = 5087^2 + 2359^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3965.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 515420 + ... + 515480.

Almost surely, 2^31442450 is an apocalyptic number.

31442450 is an abundant number, since it is smaller than the sum of its proper divisors (32940427).

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

31442450 is a wasteful number, since it uses less digits than its factorization.

31442450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 31442450 is about 5607.3567748093. The cubic root of 31442450 is about 315.6255311562.

Adding to 31442450 its reverse (5424413), we get a palindrome (36866863).

The spelling of 31442450 in words is "thirty-one million, four hundred forty-two thousand, four hundred fifty".