3112131101 has 4 divisors (see below), whose sum is σ = 3112612572. Its totient is φ = 3111649632.

The previous prime is 3112131097. The next prime is 3112131103. The reversal of 3112131101 is 1011312113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2409828100 + 702303001 = 49090^2 + 26501^2 .

It is a cyclic number.

It is not a de Polignac number, because 3112131101 - 2² = 3112131097 is a prime.

It is a super-2 number, since 2×3112131101² = 19370719979622944402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112131103) 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, 230906 + ... + 244011.

It is an arithmetic number, because the mean of its divisors is an integer number (778153143).

Almost surely, 2^3112131101 is an apocalyptic number.

It is an amenable number.

3112131101 is a deficient number, since it is larger than the sum of its proper divisors (481471).

3112131101 is an equidigital number, since it uses as much as digits as its factorization.

3112131101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481470.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 3112131101 is about 55786.4777611923. The cubic root of 3112131101 is about 1459.9992339084. Note that the first 3 decimals are identical.

Adding to 3112131101 its reverse (1011312113), we get a palindrome (4123443214).

The spelling of 3112131101 in words is "three billion, one hundred twelve million, one hundred thirty-one thousand, one hundred one".