20110031010 has 24 divisors (see below), whose sum is σ = 52286080860. Its totient is φ = 5362674912.

The previous prime is 20110031003. The next prime is 20110031023. The reversal of 20110031010 is 1013001102.

It can be written as a sum of positive squares in 2 ways, for example, as 19595240289 + 514790721 = 139983^2 + 22689^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20110030983 and 20110031001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111722305 + ... + 111722484.

Almost surely, 2^20110031010 is an apocalyptic number.

20110031010 is an abundant number, since it is smaller than the sum of its proper divisors (32176049850).

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

20110031010 is a wasteful number, since it uses less digits than its factorization.

20110031010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223444802 (or 223444799 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20110031010 its reverse (1013001102), we get a palindrome (21123032112).

The spelling of 20110031010 in words is "twenty billion, one hundred ten million, thirty-one thousand, ten".