3121385122 has 8 divisors (see below), whose sum is σ = 4682359836. Its totient is φ = 1560598512.

The previous prime is 3121385119. The next prime is 3121385129. The reversal of 3121385122 is 2215831213.

It can be written as a sum of positive squares in 2 ways, for example, as 3089247561 + 32137561 = 55581^2 + 5669^2 .

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

It is a super-4 number, since 4×3121385122⁴ (a number of 39 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (3121385129) 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, 6768 + ... + 79300.

Almost surely, 2^3121385122 is an apocalyptic number.

3121385122 is a deficient number, since it is larger than the sum of its proper divisors (1560974714).

3121385122 is a wasteful number, since it uses less digits than its factorization.

3121385122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94052.

The product of its digits is 2880, while the sum is 28.

The square root of 3121385122 is about 55869.3576300999. The cubic root of 3121385122 is about 1461.4449200047. Note that the first 3 decimals are identical.

The spelling of 3121385122 in words is "three billion, one hundred twenty-one million, three hundred eighty-five thousand, one hundred twenty-two".