20115312703 has 16 divisors (see below), whose sum is σ = 20792217600. Its totient is φ = 19447646400.

The previous prime is 20115312697. The next prime is 20115312733. The reversal of 20115312703 is 30721351102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20115312703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115312733) 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, 6095748 + ... + 6099046.

It is an arithmetic number, because the mean of its divisors is an integer number (1299513600).

Almost surely, 2^20115312703 is an apocalyptic number.

20115312703 is a deficient number, since it is larger than the sum of its proper divisors (676904897).

20115312703 is a wasteful number, since it uses less digits than its factorization.

20115312703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 20115312703 its reverse (30721351102), we get a palindrome (50836663805).

The spelling of 20115312703 in words is "twenty billion, one hundred fifteen million, three hundred twelve thousand, seven hundred three".