31480885 has 8 divisors (see below), whose sum is σ = 38295000. Its totient is φ = 24839424.

The previous prime is 31480879. The next prime is 31480901. The reversal of 31480885 is 58808413.

It can be written as a sum of positive squares in 4 ways, for example, as 12453841 + 19027044 = 3529^2 + 4362^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31480885 - 2⁹ = 31480373 is a prime.

It is a super-2 number, since 2×31480885² = 1982092240766450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42760 + ... + 43489.

It is an arithmetic number, because the mean of its divisors is an integer number (4786875).

Almost surely, 2^31480885 is an apocalyptic number.

It is an amenable number.

31480885 is a deficient number, since it is larger than the sum of its proper divisors (6814115).

31480885 is an equidigital number, since it uses as much as digits as its factorization.

31480885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86327.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 31480885 is about 5610.7829221954. The cubic root of 31480885 is about 315.7540848330.

The spelling of 31480885 in words is "thirty-one million, four hundred eighty thousand, eight hundred eighty-five".