20220100031 has 4 divisors (see below), whose sum is σ = 20304703200. Its totient is φ = 20135496864.

The previous prime is 20220099967. The next prime is 20220100063. The reversal of 20220100031 is 13000102202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20220100031 - 2⁶ = 20220099967 is a prime.

It is a super-2 number, since 2×20220100031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220099985 and 20220100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220100081) 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, 42301226 + ... + 42301703.

It is an arithmetic number, because the mean of its divisors is an integer number (5076175800).

Almost surely, 2^20220100031 is an apocalyptic number.

20220100031 is a deficient number, since it is larger than the sum of its proper divisors (84603169).

20220100031 is an equidigital number, since it uses as much as digits as its factorization.

20220100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84603168.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20220100031 its reverse (13000102202), we get a palindrome (33220202233).

The spelling of 20220100031 in words is "twenty billion, two hundred twenty million, one hundred thousand, thirty-one".