31323402043229 has 16 divisors (see below), whose sum is σ = 31743807137280. Its totient is φ = 30904031699520.

The previous prime is 31323402043207. The next prime is 31323402043259. The reversal of 31323402043229 is 92234020432313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323402043229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31323402043192 and 31323402043201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323402043259) 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, 564673307 + ... + 564728775.

It is an arithmetic number, because the mean of its divisors is an integer number (1983987946080).

Almost surely, 2^{31323402043229} is an apocalyptic number.

It is an amenable number.

31323402043229 is a deficient number, since it is larger than the sum of its proper divisors (420405094051).

31323402043229 is an equidigital number, since it uses as much as digits as its factorization.

31323402043229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64660.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 31323402043229 in words is "thirty-one trillion, three hundred twenty-three billion, four hundred two million, forty-three thousand, two hundred twenty-nine".