20100223031 has 8 divisors (see below), whose sum is σ = 23763810720. Its totient is φ = 16634667168.

The previous prime is 20100223007. The next prime is 20100223049. The reversal of 20100223031 is 13032200102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20100223031 - 2¹⁸ = 20099960887 is a prime.

It is a super-2 number, since 2×20100223031² (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 = 20100222997 and 20100223015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100223061) 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, 49507736 + ... + 49508141.

It is an arithmetic number, because the mean of its divisors is an integer number (2970476340).

Almost surely, 2^20100223031 is an apocalyptic number.

20100223031 is a deficient number, since it is larger than the sum of its proper divisors (3663587689).

20100223031 is an equidigital number, since it uses as much as digits as its factorization.

20100223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99015913.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20100223031 its reverse (13032200102), we get a palindrome (33132423133).

The spelling of 20100223031 in words is "twenty billion, one hundred million, two hundred twenty-three thousand, thirty-one".