20130331304 has 16 divisors (see below), whose sum is σ = 38384107200. Its totient is φ = 9894569392.

The previous prime is 20130331297. The next prime is 20130331307. The reversal of 20130331304 is 40313303102.

It is not an unprimeable number, because it can be changed into a prime (20130331307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21324032 + ... + 21324975.

It is an arithmetic number, because the mean of its divisors is an integer number (2399006700).

Almost surely, 2^20130331304 is an apocalyptic number.

It is an amenable number.

20130331304 is a deficient number, since it is larger than the sum of its proper divisors (18253775896).

20130331304 is a wasteful number, since it uses less digits than its factorization.

20130331304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42649072 (or 42649068 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20130331304 its reverse (40313303102), we get a palindrome (60443634406).

The spelling of 20130331304 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, three hundred four".