312100031121 has 8 divisors (see below), whose sum is σ = 426282969504. Its totient is φ = 202991890080.

The previous prime is 312100031099. The next prime is 312100031123. The reversal of 312100031121 is 121130001213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312100031121 - 2¹³ = 312100022929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312100031121.

It is not an unprimeable number, because it can be changed into a prime (312100031123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268699191 + ... + 1268699436.

It is an arithmetic number, because the mean of its divisors is an integer number (53285371188).

Almost surely, 2^312100031121 is an apocalyptic number.

It is an amenable number.

312100031121 is a deficient number, since it is larger than the sum of its proper divisors (114182938383).

312100031121 is a wasteful number, since it uses less digits than its factorization.

312100031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537398671.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 312100031121 its reverse (121130001213), we get a palindrome (433230032334).

The spelling of 312100031121 in words is "three hundred twelve billion, one hundred million, thirty-one thousand, one hundred twenty-one".