31100223020 has 12 divisors (see below), whose sum is σ = 65310468384. Its totient is φ = 12440089200.

The previous prime is 31100223019. The next prime is 31100223067. The reversal of 31100223020 is 2032200113.

It is a happy number.

It is a super-4 number, since 4×31100223020⁴ (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31100222986 and 31100223004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777505556 + ... + 777505595.

It is an arithmetic number, because the mean of its divisors is an integer number (5442539032).

Almost surely, 2^31100223020 is an apocalyptic number.

It is an amenable number.

31100223020 is an abundant number, since it is smaller than the sum of its proper divisors (34210245364).

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

31100223020 is a wasteful number, since it uses less digits than its factorization.

31100223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555011160 (or 1555011158 counting only the distinct ones).

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

Adding to 31100223020 its reverse (2032200113), we get a palindrome (33132423133).

The spelling of 31100223020 in words is "thirty-one billion, one hundred million, two hundred twenty-three thousand, twenty".