31472316 has 36 divisors (see below), whose sum is σ = 82124224. Its totient is φ = 10152000.

The previous prime is 31472293. The next prime is 31472339. The reversal of 31472316 is 61327413.

It is an interprime number because it is at equal distance from previous prime (31472293) and next prime (31472339).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31472316.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 12985 + ... + 15216.

Almost surely, 2^31472316 is an apocalyptic number.

31472316 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31472316 is an abundant number, since it is smaller than the sum of its proper divisors (50651908).

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

31472316 is a wasteful number, since it uses less digits than its factorization.

31472316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28242 (or 28237 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 31472316 is about 5610.0192513039. The cubic root of 31472316 is about 315.7254331366.

Adding to 31472316 its reverse (61327413), we get a palindrome (92799729).

The spelling of 31472316 in words is "thirty-one million, four hundred seventy-two thousand, three hundred sixteen".