31134208 has 120 divisors (see below), whose sum is σ = 77670252. Its totient is φ = 12386304.

The previous prime is 31134143. The next prime is 31134221. The reversal of 31134208 is 80243113.

It can be written as a sum of positive squares in 2 ways, for example, as 30118144 + 1016064 = 5488^2 + 1008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426460 + ... + 426532.

Almost surely, 2^31134208 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 31134208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38835126).

31134208 is an abundant number, since it is smaller than the sum of its proper divisors (46536044).

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

31134208 is an equidigital number, since it uses as much as digits as its factorization.

31134208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 31134208 is about 5579.8035807724. The cubic root of 31134208 is about 314.5907442353.

The spelling of 31134208 in words is "thirty-one million, one hundred thirty-four thousand, two hundred eight".