20311821302 has 16 divisors (see below), whose sum is σ = 31461460992. Its totient is φ = 9824894760.

The previous prime is 20311821281. The next prime is 20311821307. The reversal of 20311821302 is 20312811302.

It is a happy number.

20311821302 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311821307) 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, 128423 + ... + 238989.

It is an arithmetic number, because the mean of its divisors is an integer number (1966341312).

Almost surely, 2^20311821302 is an apocalyptic number.

20311821302 is a deficient number, since it is larger than the sum of its proper divisors (11149639690).

20311821302 is a wasteful number, since it uses less digits than its factorization.

20311821302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113563.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 20311821302 in words is "twenty billion, three hundred eleven million, eight hundred twenty-one thousand, three hundred two".