33130131321 has 12 divisors (see below), whose sum is σ = 51385510032. Its totient is φ = 18931503528.

The previous prime is 33130131319. The next prime is 33130131361. The reversal of 33130131321 is 12313103133.

It is not a de Polignac number, because 33130131321 - 2¹ = 33130131319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (33130131311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112687375 + ... + 112687668.

It is an arithmetic number, because the mean of its divisors is an integer number (4282125836).

Almost surely, 2^33130131321 is an apocalyptic number.

It is an amenable number.

33130131321 is a deficient number, since it is larger than the sum of its proper divisors (18255378711).

33130131321 is a wasteful number, since it uses less digits than its factorization.

33130131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225375060 (or 225375053 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 33130131321 its reverse (12313103133), we get a palindrome (45443234454).

It can be divided in two parts, 33130 and 131321, that added together give a triangular number (164451 = T₅₇₃).

The spelling of 33130131321 in words is "thirty-three billion, one hundred thirty million, one hundred thirty-one thousand, three hundred twenty-one".