100031323130 has 32 divisors (see below), whose sum is σ = 186433779600. Its totient is φ = 38597827072.

The previous prime is 100031323079. The next prime is 100031323157. The reversal of 100031323130 is 31323130001.

It can be written as a sum of positive squares in 8 ways, for example, as 45496463401 + 54534859729 = 213299^2 + 233527^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100031323099 and 100031323108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166094 + ... + 477126.

Almost surely, 2^100031323130 is an apocalyptic number.

100031323130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100031323130 is a deficient number, since it is larger than the sum of its proper divisors (86402456470).

100031323130 is a wasteful number, since it uses less digits than its factorization.

100031323130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312178.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 100031323130 its reverse (31323130001), we get a palindrome (131354453131).

The spelling of 100031323130 in words is "one hundred billion, thirty-one million, three hundred twenty-three thousand, one hundred thirty".