31045480 has 16 divisors (see below), whose sum is σ = 69852420. Its totient is φ = 12418176.

The previous prime is 31045447. The next prime is 31045493. The reversal of 31045480 is 8454013.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 4605316 = 5142^2 + 2146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388029 + ... + 388108.

Almost surely, 2^31045480 is an apocalyptic number.

It is an amenable number.

31045480 is an abundant number, since it is smaller than the sum of its proper divisors (38806940).

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

31045480 is a wasteful number, since it uses less digits than its factorization.

31045480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776148 (or 776144 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 31045480 is about 5571.8470905078. The cubic root of 31045480 is about 314.2916138208.

Adding to 31045480 its reverse (8454013), we get a palindrome (39499493).

The spelling of 31045480 in words is "thirty-one million, forty-five thousand, four hundred eighty".