20130331307 has 2 divisors, whose sum is σ = 20130331308. Its totient is φ = 20130331306.

The previous prime is 20130331297. The next prime is 20130331321. The reversal of 20130331307 is 70313303102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20130331307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20130331357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065165653 + 10065165654.

It is an arithmetic number, because the mean of its divisors is an integer number (10065165654).

Almost surely, 2^20130331307 is an apocalyptic number.

20130331307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130331307 is an equidigital number, since it uses as much as digits as its factorization.

20130331307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 23.

Adding to 20130331307 its reverse (70313303102), we get a palindrome (90443634409).

The spelling of 20130331307 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, three hundred seven".