31102199999 has 4 divisors (see below), whose sum is σ = 33494676936. Its totient is φ = 28709723064.

The previous prime is 31102199971. The next prime is 31102200001. The reversal of 31102199999 is 99999120113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31102199999 - 2⁸ = 31102199743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31102199999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102199399) 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, 1196238449 + ... + 1196238474.

It is an arithmetic number, because the mean of its divisors is an integer number (8373669234).

Almost surely, 2^31102199999 is an apocalyptic number.

31102199999 is a deficient number, since it is larger than the sum of its proper divisors (2392476937).

31102199999 is a wasteful number, since it uses less digits than its factorization.

31102199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392476936.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 31102199999 in words is "thirty-one billion, one hundred two million, one hundred ninety-nine thousand, nine hundred ninety-nine".