31143114329 has 4 divisors (see below), whose sum is σ = 31143801780. Its totient is φ = 31142426880.

The previous prime is 31143114251. The next prime is 31143114361. The reversal of 31143114329 is 92341134113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28635408400 + 2507705929 = 169220^2 + 50077^2 .

It is a cyclic number.

It is not a de Polignac number, because 31143114329 - 2¹⁶ = 31143048793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31143114295 and 31143114304.

It is not an unprimeable number, because it can be changed into a prime (31143114389) 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, 270584 + ... + 368105.

It is an arithmetic number, because the mean of its divisors is an integer number (7785950445).

Almost surely, 2^31143114329 is an apocalyptic number.

It is an amenable number.

31143114329 is a deficient number, since it is larger than the sum of its proper divisors (687451).

31143114329 is an equidigital number, since it uses as much as digits as its factorization.

31143114329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687450.

The product of its digits is 7776, while the sum is 32.

The spelling of 31143114329 in words is "thirty-one billion, one hundred forty-three million, one hundred fourteen thousand, three hundred twenty-nine".