31479716 has 12 divisors (see below), whose sum is σ = 58330188. Its totient is φ = 14813952.

The previous prime is 31479697. The next prime is 31479719. The reversal of 31479716 is 61797413.

It can be written as a sum of positive squares in 2 ways, for example, as 26050816 + 5428900 = 5104^2 + 2330^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31479716.

It is not an unprimeable number, because it can be changed into a prime (31479719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231401 + ... + 231536.

It is an arithmetic number, because the mean of its divisors is an integer number (4860849).

Almost surely, 2^31479716 is an apocalyptic number.

It is an amenable number.

31479716 is a deficient number, since it is larger than the sum of its proper divisors (26850472).

31479716 is a wasteful number, since it uses less digits than its factorization.

31479716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462958 (or 462956 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 31479716 is about 5610.6787468184. The cubic root of 31479716 is about 315.7501764180.

The spelling of 31479716 in words is "thirty-one million, four hundred seventy-nine thousand, seven hundred sixteen".