20310299969 has 4 divisors (see below), whose sum is σ = 20314447296. Its totient is φ = 20306152644.

The previous prime is 20310299941. The next prime is 20310299987. The reversal of 20310299969 is 96999201302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310299969 is a prime.

It is a super-2 number, since 2×20310299969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310299069) 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, 2066309 + ... + 2076114.

It is an arithmetic number, because the mean of its divisors is an integer number (5078611824).

Almost surely, 2^20310299969 is an apocalyptic number.

It is an amenable number.

20310299969 is a deficient number, since it is larger than the sum of its proper divisors (4147327).

20310299969 is an equidigital number, since it uses as much as digits as its factorization.

20310299969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147326.

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 20310299969 in words is "twenty billion, three hundred ten million, two hundred ninety-nine thousand, nine hundred sixty-nine".