20131323033 has 16 divisors (see below), whose sum is σ = 27142093440. Its totient is φ = 13271209344.

The previous prime is 20131323001. The next prime is 20131323059. The reversal of 20131323033 is 33032313102.

It is not a de Polignac number, because 20131323033 - 2⁵ = 20131323001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131323073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103285 + ... + 225677.

It is an arithmetic number, because the mean of its divisors is an integer number (1696380840).

Almost surely, 2^20131323033 is an apocalyptic number.

It is an amenable number.

20131323033 is a deficient number, since it is larger than the sum of its proper divisors (7010770407).

20131323033 is a wasteful number, since it uses less digits than its factorization.

20131323033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123008.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20131323033 its reverse (33032313102), we get a palindrome (53163636135).

The spelling of 20131323033 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-three thousand, thirty-three".