323431220133 has 64 divisors (see below), whose sum is σ = 557147289600. Its totient is φ = 181601377920.

The previous prime is 323431220111. The next prime is 323431220191. The reversal of 323431220133 is 331022134323.

323431220133 is a `hidden beast` number, since 3 + 2 + 3 + 431 + 220 + 1 + 3 + 3 = 666.

It is not a de Polignac number, because 323431220133 - 2⁶ = 323431220069 is a prime.

It is a super-2 number, since 2×323431220133² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 323431220097 and 323431220106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323431222133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30247318 + ... + 30258008.

It is an arithmetic number, because the mean of its divisors is an integer number (8705426400).

Almost surely, 2^323431220133 is an apocalyptic number.

It is an amenable number.

323431220133 is a deficient number, since it is larger than the sum of its proper divisors (233716069467).

323431220133 is a wasteful number, since it uses less digits than its factorization.

323431220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13479 (or 13473 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 323431220133 its reverse (331022134323), we get a palindrome (654453354456).

The spelling of 323431220133 in words is "three hundred twenty-three billion, four hundred thirty-one million, two hundred twenty thousand, one hundred thirty-three".