31448485 has 4 divisors (see below), whose sum is σ = 37738188. Its totient is φ = 25158784.

The previous prime is 31448479. The next prime is 31448507. The reversal of 31448485 is 58484413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 18610596 = 3583^2 + 4314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31448485 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3144844 + ... + 3144853.

It is an arithmetic number, because the mean of its divisors is an integer number (9434547).

Almost surely, 2^31448485 is an apocalyptic number.

It is an amenable number.

31448485 is a deficient number, since it is larger than the sum of its proper divisors (6289703).

31448485 is an equidigital number, since it uses as much as digits as its factorization.

31448485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289702.

The product of its digits is 61440, while the sum is 37.

The square root of 31448485 is about 5607.8948813258. The cubic root of 31448485 is about 315.6457233722.

The spelling of 31448485 in words is "thirty-one million, four hundred forty-eight thousand, four hundred eighty-five".