31486016 has 14 divisors (see below), whose sum is σ = 62480190. Its totient is φ = 15742976.

The previous prime is 31486009. The next prime is 31486033. The reversal of 31486016 is 61068413.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 5271616 = 5120^2 + 2296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31486016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245921 + ... + 246048.

Almost surely, 2^31486016 is an apocalyptic number.

It is an amenable number.

31486016 is a deficient number, since it is larger than the sum of its proper divisors (30994174).

31486016 is an equidigital number, since it uses as much as digits as its factorization.

31486016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491981 (or 491971 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31486016 is about 5611.2401481312. The cubic root of 31486016 is about 315.7712385884.

The spelling of 31486016 in words is "thirty-one million, four hundred eighty-six thousand, sixteen".