31311311129999 has 16 divisors (see below), whose sum is σ = 32426331930144. Its totient is φ = 30215745705600.

The previous prime is 31311311129897. The next prime is 31311311130041. The reversal of 31311311129999 is 99992111311313.

It is a cyclic number.

It is not a de Polignac number, because 31311311129999 - 2¹² = 31311311125903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

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 31311311129999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311311129299) 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, 89972069 + ... + 90319409.

It is an arithmetic number, because the mean of its divisors is an integer number (2026645745634).

Almost surely, 2^{31311311129999} is an apocalyptic number.

31311311129999 is a deficient number, since it is larger than the sum of its proper divisors (1115020800145).

31311311129999 is a wasteful number, since it uses less digits than its factorization.

31311311129999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375338.

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

The spelling of 31311311129999 in words is "thirty-one trillion, three hundred eleven billion, three hundred eleven million, one hundred twenty-nine thousand, nine hundred ninety-nine".