20831300007 has 16 divisors (see below), whose sum is σ = 31755827712. Its totient is φ = 11898764640.

The previous prime is 20831299997. The next prime is 20831300011. The reversal of 20831300007 is 70000313802.

It is not a de Polignac number, because 20831300007 - 2⁸ = 20831299751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20831300007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20831300057) 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, 148219 + ... + 252252.

It is an arithmetic number, because the mean of its divisors is an integer number (1984739232).

Almost surely, 2^20831300007 is an apocalyptic number.

20831300007 is a deficient number, since it is larger than the sum of its proper divisors (10924527705).

20831300007 is a wasteful number, since it uses less digits than its factorization.

20831300007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402958.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 20831300007 its reverse (70000313802), we get a palindrome (90831613809).

The spelling of 20831300007 in words is "twenty billion, eight hundred thirty-one million, three hundred thousand, seven".