31013330323 has 4 divisors (see below), whose sum is σ = 31014669088. Its totient is φ = 31011991560.

The previous prime is 31013330321. The next prime is 31013330347. The reversal of 31013330323 is 32303331013.

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 31013330323 - 2¹ = 31013330321 is a prime.

It is a super-2 number, since 2×31013330323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31013330294 and 31013330303.

It is not an unprimeable number, because it can be changed into a prime (31013330321) 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, 634011 + ... + 681172.

It is an arithmetic number, because the mean of its divisors is an integer number (7753667272).

Almost surely, 2^31013330323 is an apocalyptic number.

31013330323 is a deficient number, since it is larger than the sum of its proper divisors (1338765).

31013330323 is a wasteful number, since it uses less digits than its factorization.

31013330323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338764.

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

Adding to 31013330323 its reverse (32303331013), we get a palindrome (63316661336).

The spelling of 31013330323 in words is "thirty-one billion, thirteen million, three hundred thirty thousand, three hundred twenty-three".