31301100100 has 18 divisors (see below), whose sum is σ = 67923387434. Its totient is φ = 12520440000.

The previous prime is 31301100073. The next prime is 31301100109. The reversal of 31301100100 is 100110313.

It can be written as a sum of positive squares in 3 ways, for example, as 10003200256 + 21297899844 = 100016^2 + 145938^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (31301100109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156505401 + ... + 156505600.

Almost surely, 2^31301100100 is an apocalyptic number.

It is an amenable number.

31301100100 is an abundant number, since it is smaller than the sum of its proper divisors (36622287334).

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

31301100100 is a wasteful number, since it uses less digits than its factorization.

31301100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313011015 (or 313011008 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 10.

Adding to 31301100100 its reverse (100110313), we get a palindrome (31401210413).

The spelling of 31301100100 in words is "thirty-one billion, three hundred one million, one hundred thousand, one hundred".