31253302216 has 8 divisors (see below), whose sum is σ = 58599941670. Its totient is φ = 15626651104.

The previous prime is 31253302181. The next prime is 31253302261. The reversal of 31253302216 is 61220335213.

It can be written as a sum of positive squares in only one way, i.e., 23935184100 + 7318118116 = 154710^2 + 85546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953331381 + ... + 1953331396.

Almost surely, 2^31253302216 is an apocalyptic number.

It is an amenable number.

31253302216 is a deficient number, since it is larger than the sum of its proper divisors (27346639454).

31253302216 is a wasteful number, since it uses less digits than its factorization.

31253302216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906662783 (or 3906662779 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 31253302216 its reverse (61220335213), we get a palindrome (92473637429).

The spelling of 31253302216 in words is "thirty-one billion, two hundred fifty-three million, three hundred two thousand, two hundred sixteen".