31896130 has 16 divisors (see below), whose sum is σ = 65615040. Its totient is φ = 10935792.

The previous prime is 31896121. The next prime is 31896133. The reversal of 31896130 is 3169813.

It is a junction number, because it is equal to n+sod(n) for n = 31896092 and 31896101.

It is not an unprimeable number, because it can be changed into a prime (31896133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227760 + ... + 227899.

It is an arithmetic number, because the mean of its divisors is an integer number (4100940).

Almost surely, 2^31896130 is an apocalyptic number.

31896130 is an abundant number, since it is smaller than the sum of its proper divisors (33718910).

31896130 is a wasteful number, since it uses less digits than its factorization.

31896130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455673.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 31896130 is about 5647.6658895512. The cubic root of 31896130 is about 317.1363310811.

The spelling of 31896130 in words is "thirty-one million, eight hundred ninety-six thousand, one hundred thirty".