20311042302 has 16 divisors (see below), whose sum is σ = 45135649680. Its totient is φ = 6770347416.

The previous prime is 20311042267. The next prime is 20311042307. The reversal of 20311042302 is 20324011302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311042307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188065153 + ... + 188065260.

It is an arithmetic number, because the mean of its divisors is an integer number (2820978105).

Almost surely, 2^20311042302 is an apocalyptic number.

20311042302 is an abundant number, since it is smaller than the sum of its proper divisors (24824607378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311042302 is a wasteful number, since it uses less digits than its factorization.

20311042302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376130424 (or 376130418 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20311042302 its reverse (20324011302), we get a palindrome (40635053604).

The spelling of 20311042302 in words is "twenty billion, three hundred eleven million, forty-two thousand, three hundred two".