20311022102 has 16 divisors (see below), whose sum is σ = 36867065760. Its totient is φ = 8192681088.

The previous prime is 20311022089. The next prime is 20311022107. The reversal of 20311022102 is 20122011302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311022107) 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, 42669977 + ... + 42670452.

It is an arithmetic number, because the mean of its divisors is an integer number (2304191610).

Almost surely, 2^20311022102 is an apocalyptic number.

20311022102 is a deficient number, since it is larger than the sum of its proper divisors (16556043658).

20311022102 is a wasteful number, since it uses less digits than its factorization.

20311022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85340455.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20311022102 its reverse (20122011302), we get a palindrome (40433033404).

The spelling of 20311022102 in words is "twenty billion, three hundred eleven million, twenty-two thousand, one hundred two".