31868149633 has 16 divisors (see below), whose sum is σ = 32614583040. Its totient is φ = 31131783936.

The previous prime is 31868149613. The next prime is 31868149669. The reversal of 31868149633 is 33694186813.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31868149633 - 2⁵ = 31868149601 is a prime.

It is a super-3 number, since 3×31868149633³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31868149603) 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, 4185516 + ... + 4193122.

It is an arithmetic number, because the mean of its divisors is an integer number (2038411440).

Almost surely, 2^31868149633 is an apocalyptic number.

It is an amenable number.

31868149633 is a deficient number, since it is larger than the sum of its proper divisors (746433407).

31868149633 is a wasteful number, since it uses less digits than its factorization.

31868149633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256.

The product of its digits is 2239488, while the sum is 52.

The spelling of 31868149633 in words is "thirty-one billion, eight hundred sixty-eight million, one hundred forty-nine thousand, six hundred thirty-three".