321131020133 has 48 divisors (see below), whose sum is σ = 410856620160. Its totient is φ = 245626128000.

The previous prime is 321131020129. The next prime is 321131020139. The reversal of 321131020133 is 331020131123.

It is not a de Polignac number, because 321131020133 - 2² = 321131020129 is a prime.

It is a super-2 number, since 2×321131020133² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321131020139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26292398 + ... + 26304608.

It is an arithmetic number, because the mean of its divisors is an integer number (8559512920).

Almost surely, 2^321131020133 is an apocalyptic number.

It is an amenable number.

321131020133 is a deficient number, since it is larger than the sum of its proper divisors (89725600027).

321131020133 is a wasteful number, since it uses less digits than its factorization.

321131020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12810 (or 12799 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 321131020133 its reverse (331020131123), we get a palindrome (652151151256).

The spelling of 321131020133 in words is "three hundred twenty-one billion, one hundred thirty-one million, twenty thousand, one hundred thirty-three".