20311103202 has 32 divisors (see below), whose sum is σ = 43754038272. Its totient is φ = 6248563584.

The previous prime is 20311103173. The next prime is 20311103257. The reversal of 20311103202 is 20230111302.

It is a super-4 number, since 4×20311103202⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573823 + ... + 608189.

It is an arithmetic number, because the mean of its divisors is an integer number (1367313696).

Almost surely, 2^20311103202 is an apocalyptic number.

20311103202 is an abundant number, since it is smaller than the sum of its proper divisors (23442935070).

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

20311103202 is a wasteful number, since it uses less digits than its factorization.

20311103202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41962.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20311103202 its reverse (20230111302), we get a palindrome (40541214504).

The spelling of 20311103202 in words is "twenty billion, three hundred eleven million, one hundred three thousand, two hundred two".