31430152 has 16 divisors (see below), whose sum is σ = 63464940. Its totient is φ = 14506176.

The previous prime is 31430143. The next prime is 31430177. The reversal of 31430152 is 25103413.

It can be written as a sum of positive squares in 2 ways, for example, as 31427236 + 2916 = 5606^2 + 54^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 151003 + ... + 151210.

Almost surely, 2^31430152 is an apocalyptic number.

It is an amenable number.

31430152 is an abundant number, since it is smaller than the sum of its proper divisors (32034788).

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

31430152 is a wasteful number, since it uses less digits than its factorization.

31430152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302232 (or 302228 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 31430152 is about 5606.2600724547. The cubic root of 31430152 is about 315.5843758714.

Adding to 31430152 its reverse (25103413), we get a palindrome (56533565).

The spelling of 31430152 in words is "thirty-one million, four hundred thirty thousand, one hundred fifty-two".