20100022031 has 4 divisors (see below), whose sum is σ = 20107288992. Its totient is φ = 20092755072.

The previous prime is 20100022027. The next prime is 20100022051. The reversal of 20100022031 is 13022000102.

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 20100022031 - 2² = 20100022027 is a prime.

It is a super-2 number, since 2×20100022031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100022051) 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, 3629330 + ... + 3634863.

It is an arithmetic number, because the mean of its divisors is an integer number (5026822248).

Almost surely, 2^20100022031 is an apocalyptic number.

20100022031 is a deficient number, since it is larger than the sum of its proper divisors (7266961).

20100022031 is an equidigital number, since it uses as much as digits as its factorization.

20100022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266960.

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

Adding to 20100022031 its reverse (13022000102), we get a palindrome (33122022133).

The spelling of 20100022031 in words is "twenty billion, one hundred million, twenty-two thousand, thirty-one".