3112133021 has 4 divisors (see below), whose sum is σ = 3122076252. Its totient is φ = 3102189792.

The previous prime is 3112132993. The next prime is 3112133027. The reversal of 3112133021 is 1203312113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203312113 = 37 ⋅32521949.

It can be written as a sum of positive squares in 2 ways, for example, as 21996100 + 3090136921 = 4690^2 + 55589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112133021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112133027) 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, 4971146 + ... + 4971771.

It is an arithmetic number, because the mean of its divisors is an integer number (780519063).

Almost surely, 2^3112133021 is an apocalyptic number.

It is an amenable number.

3112133021 is a deficient number, since it is larger than the sum of its proper divisors (9943231).

3112133021 is an equidigital number, since it uses as much as digits as its factorization.

3112133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943230.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3112133021 is about 55786.4949696609. The cubic root of 3112133021 is about 1459.9995341526. Note that the first 3 decimals are identical.

Adding to 3112133021 its reverse (1203312113), we get a palindrome (4315445134).

The spelling of 3112133021 in words is "three billion, one hundred twelve million, one hundred thirty-three thousand, twenty-one".