31323331123 has 16 divisors (see below), whose sum is σ = 36677428480. Its totient is φ = 26190664416.

The previous prime is 31323331051. The next prime is 31323331141. The reversal of 31323331123 is 32113332313.

It is not a de Polignac number, because 31323331123 - 2²¹ = 31321233971 is a prime.

It is a super-2 number, since 2×31323331123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323331153) 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, 170773 + ... + 303001.

It is an arithmetic number, because the mean of its divisors is an integer number (2292339280).

Almost surely, 2^31323331123 is an apocalyptic number.

31323331123 is a deficient number, since it is larger than the sum of its proper divisors (5354097357).

31323331123 is a wasteful number, since it uses less digits than its factorization.

31323331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133066.

The product of its digits is 2916, while the sum is 25.

Adding to 31323331123 its reverse (32113332313), we get a palindrome (63436663436).

The spelling of 31323331123 in words is "thirty-one billion, three hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-three".