31144333112329 has 4 divisors (see below), whose sum is σ = 31199651644176. Its totient is φ = 31089014580484.

The previous prime is 31144333112323. The next prime is 31144333112339. The reversal of 31144333112329 is 92321133344113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31144333112329 - 2⁹ = 31144333111817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31144333112291 and 31144333112300.

It is not an unprimeable number, because it can be changed into a prime (31144333112323) 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, 27659265079 + ... + 27659266204.

It is an arithmetic number, because the mean of its divisors is an integer number (7799912911044).

Almost surely, 2^{31144333112329} is an apocalyptic number.

It is an amenable number.

31144333112329 is a deficient number, since it is larger than the sum of its proper divisors (55318531847).

31144333112329 is an equidigital number, since it uses as much as digits as its factorization.

31144333112329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55318531846.

The product of its digits is 139968, while the sum is 40.

The spelling of 31144333112329 in words is "thirty-one trillion, one hundred forty-four billion, three hundred thirty-three million, one hundred twelve thousand, three hundred twenty-nine".