20130331113 has 8 divisors (see below), whose sum is σ = 29822712800. Its totient is φ = 13420220724.

The previous prime is 20130331103. The next prime is 20130331163. The reversal of 20130331113 is 31113303102.

It is a happy number.

It is not a de Polignac number, because 20130331113 - 2⁴ = 20130331097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130331103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372783883 + ... + 372783936.

It is an arithmetic number, because the mean of its divisors is an integer number (3727839100).

Almost surely, 2^20130331113 is an apocalyptic number.

It is an amenable number.

20130331113 is a deficient number, since it is larger than the sum of its proper divisors (9692381687).

20130331113 is an equidigital number, since it uses as much as digits as its factorization.

20130331113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745567828 (or 745567822 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20130331113 its reverse (31113303102), we get a palindrome (51243634215).

The spelling of 20130331113 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, one hundred thirteen".