20033123313 has 32 divisors (see below), whose sum is σ = 30694954752. Its totient is φ = 11384524800.

The previous prime is 20033123263. The next prime is 20033123351. The reversal of 20033123313 is 31332133002.

It is not a de Polignac number, because 20033123313 - 2⁸ = 20033123057 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20033123313.

It is not an unprimeable number, because it can be changed into a prime (20033123713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4456495 + ... + 4460987.

It is an arithmetic number, because the mean of its divisors is an integer number (959217336).

Almost surely, 2^20033123313 is an apocalyptic number.

It is an amenable number.

20033123313 is a deficient number, since it is larger than the sum of its proper divisors (10661831439).

20033123313 is a wasteful number, since it uses less digits than its factorization.

20033123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625.

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

Adding to 20033123313 its reverse (31332133002), we get a palindrome (51365256315).

The spelling of 20033123313 in words is "twenty billion, thirty-three million, one hundred twenty-three thousand, three hundred thirteen".