31031303323 has 4 divisors (see below), whose sum is σ = 32380490448. Its totient is φ = 29682116200.

The previous prime is 31031303309. The next prime is 31031303333. The reversal of 31031303323 is 32330313013.

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 31031303323 - 2²⁵ = 30997748891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31031303294 and 31031303303.

It is not an unprimeable number, because it can be changed into a prime (31031303333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674593528 + ... + 674593573.

It is an arithmetic number, because the mean of its divisors is an integer number (8095122612).

Almost surely, 2^31031303323 is an apocalyptic number.

31031303323 is a deficient number, since it is larger than the sum of its proper divisors (1349187125).

31031303323 is a wasteful number, since it uses less digits than its factorization.

31031303323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349187124.

The product of its (nonzero) digits is 1458, while the sum is 22.

Adding to 31031303323 its reverse (32330313013), we get a palindrome (63361616336).

The spelling of 31031303323 in words is "thirty-one billion, thirty-one million, three hundred three thousand, three hundred twenty-three".