3101312121 has 4 divisors (see below), whose sum is σ = 4135082832. Its totient is φ = 2067541412.

The previous prime is 3101312099. The next prime is 3101312129. The reversal of 3101312121 is 1212131013.

It is a happy number.

3101312121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3101312121 - 2⁵ = 3101312089 is a prime.

It is a super-3 number, since 3×3101312121³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3101312121.

It is not an unprimeable number, because it can be changed into a prime (3101312129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516885351 + ... + 516885356.

It is an arithmetic number, because the mean of its divisors is an integer number (1033770708).

Almost surely, 2^3101312121 is an apocalyptic number.

It is an amenable number.

3101312121 is a deficient number, since it is larger than the sum of its proper divisors (1033770711).

3101312121 is a wasteful number, since it uses less digits than its factorization.

3101312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033770710.

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

The square root of 3101312121 is about 55689.4255761361. The cubic root of 3101312121 is about 1458.3054275919.

Adding to 3101312121 its reverse (1212131013), we get a palindrome (4313443134).

It can be divided in two parts, 31013 and 12121, that added together give a palindrome (43134).

The spelling of 3101312121 in words is "three billion, one hundred one million, three hundred twelve thousand, one hundred twenty-one".