312111101103100 has 72 divisors (see below), whose sum is σ = 729385844856368. Its totient is φ = 115240040755200.

The previous prime is 312111101103091. The next prime is 312111101103101. The reversal of 312111101103100 is 1301101111213.

It is a super-2 number, since 2×312111101103100² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111101103101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161679580 + ... + 163598620.

Almost surely, 2^{312111101103100} is an apocalyptic number.

It is an amenable number.

312111101103100 is an abundant number, since it is smaller than the sum of its proper divisors (417274743753268).

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

312111101103100 is a wasteful number, since it uses less digits than its factorization.

312111101103100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044175 (or 2044168 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 312111101103100 its reverse (1301101111213), we get a palindrome (313412202214313).

The spelling of 312111101103100 in words is "three hundred twelve trillion, one hundred eleven billion, one hundred one million, one hundred three thousand, one hundred".