33231200013 has 24 divisors (see below), whose sum is σ = 55120334880. Its totient is φ = 19080113760.

The previous prime is 33231199951. The next prime is 33231200047. The reversal of 33231200013 is 31000213233.

It is a de Polignac number, because none of the positive numbers 2^k-33231200013 is a prime.

It is a super-2 number, since 2×33231200013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33231200053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8831506 + ... + 8835267.

It is an arithmetic number, because the mean of its divisors is an integer number (2296680620).

Almost surely, 2^33231200013 is an apocalyptic number.

33231200013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

33231200013 is a deficient number, since it is larger than the sum of its proper divisors (21889134867).

33231200013 is a wasteful number, since it uses less digits than its factorization.

33231200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17666809 (or 17666806 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 33231200013 its reverse (31000213233), we get a palindrome (64231413246).

The spelling of 33231200013 in words is "thirty-three billion, two hundred thirty-one million, two hundred thousand, thirteen".