31323013323 has 32 divisors (see below), whose sum is σ = 48276710400. Its totient is φ = 17695117440.

The previous prime is 31323013307. The next prime is 31323013327. The reversal of 31323013323 is 32331032313.

It is not a de Polignac number, because 31323013323 - 2⁴ = 31323013307 is a prime.

It is a super-2 number, since 2×31323013323² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31323013293 and 31323013302.

It is not an unprimeable number, because it can be changed into a prime (31323013327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 632233 + ... + 679973.

It is an arithmetic number, because the mean of its divisors is an integer number (1508647200).

Almost surely, 2^31323013323 is an apocalyptic number.

31323013323 is a deficient number, since it is larger than the sum of its proper divisors (16953697077).

31323013323 is a wasteful number, since it uses less digits than its factorization.

31323013323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48107.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 31323013323 its reverse (32331032313), we get a palindrome (63654045636).

The spelling of 31323013323 in words is "thirty-one billion, three hundred twenty-three million, thirteen thousand, three hundred twenty-three".