31552040647 has 16 divisors (see below), whose sum is σ = 34245741600. Its totient is φ = 28952386560.

The previous prime is 31552040627. The next prime is 31552040683. The reversal of 31552040647 is 74604025513.

It is a cyclic number.

It is not a de Polignac number, because 31552040647 - 2³¹ = 29404556999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31552040617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086229 + ... + 1114897.

It is an arithmetic number, because the mean of its divisors is an integer number (2140358850).

Almost surely, 2^31552040647 is an apocalyptic number.

31552040647 is a deficient number, since it is larger than the sum of its proper divisors (2693700953).

31552040647 is a wasteful number, since it uses less digits than its factorization.

31552040647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30306.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 31552040647 in words is "thirty-one billion, five hundred fifty-two million, forty thousand, six hundred forty-seven".