100001131312 has 20 divisors (see below), whose sum is σ = 193767692320. Its totient is φ = 49996565568.

The previous prime is 100001131309. The next prime is 100001131331. The reversal of 100001131312 is 213131100001.

It is a junction number, because it is equal to n+sod(n) for n = 100001131292 and 100001131301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38328 + ... + 448855.

It is an arithmetic number, because the mean of its divisors is an integer number (9688384616).

Almost surely, 2^100001131312 is an apocalyptic number.

It is an amenable number.

100001131312 is a deficient number, since it is larger than the sum of its proper divisors (93766561008).

100001131312 is a wasteful number, since it uses less digits than its factorization.

100001131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500020 (or 500014 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 100001131312 its reverse (213131100001), we get a palindrome (313132231313).

The spelling of 100001131312 in words is "one hundred billion, one million, one hundred thirty-one thousand, three hundred twelve".