31053316 has 48 divisors (see below), whose sum is σ = 64915200. Its totient is φ = 12716928.

The previous prime is 31053311. The next prime is 31053317. The reversal of 31053316 is 61335013.

It is not an unprimeable number, because it can be changed into a prime (31053311) 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, 135490 + ... + 135718.

It is an arithmetic number, because the mean of its divisors is an integer number (1352400).

Almost surely, 2^31053316 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 31053316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32457600).

31053316 is an abundant number, since it is smaller than the sum of its proper divisors (33861884).

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

31053316 is a wasteful number, since it uses less digits than its factorization.

31053316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 31053316 is about 5572.5502240895. The cubic root of 31053316 is about 314.3180544053.

Adding to 31053316 its reverse (61335013), we get a palindrome (92388329).

The spelling of 31053316 in words is "thirty-one million, fifty-three thousand, three hundred sixteen".