31323321123 has 8 divisors (see below), whose sum is σ = 41777874000. Its totient is φ = 20875491168.

The previous prime is 31323321101. The next prime is 31323321179. The reversal of 31323321123 is 32112332313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31323321123 - 2²¹ = 31321223971 is a prime.

It is a super-2 number, since 2×31323321123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31323321093 and 31323321102.

It is not an unprimeable number, because it can be changed into a prime (31323322123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1669848 + ... + 1688501.

It is an arithmetic number, because the mean of its divisors is an integer number (5222234250).

Almost surely, 2^31323321123 is an apocalyptic number.

31323321123 is a deficient number, since it is larger than the sum of its proper divisors (10454552877).

31323321123 is a wasteful number, since it uses less digits than its factorization.

31323321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361461.

The product of its digits is 1944, while the sum is 24.

Adding to 31323321123 its reverse (32112332313), we get a palindrome (63435653436).

The spelling of 31323321123 in words is "thirty-one billion, three hundred twenty-three million, three hundred twenty-one thousand, one hundred twenty-three".