31430052 has 48 divisors (see below), whose sum is σ = 85034880. Its totient is φ = 10020384.

The previous prime is 31430027. The next prime is 31430053. The reversal of 31430052 is 25003413.

31430052 is a `hidden beast` number, since 314 + 300 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31430053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3843 + ... + 8810.

It is an arithmetic number, because the mean of its divisors is an integer number (1771560).

Almost surely, 2^31430052 is an apocalyptic number.

It is an amenable number.

31430052 is an abundant number, since it is smaller than the sum of its proper divisors (53604828).

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

31430052 is a wasteful number, since it uses less digits than its factorization.

31430052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12689 (or 12681 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 31430052 is about 5606.2511538460. The cubic root of 31430052 is about 315.5840411772.

Adding to 31430052 its reverse (25003413), we get a palindrome (56433465).

The spelling of 31430052 in words is "thirty-one million, four hundred thirty thousand, fifty-two".