3121122231 has 12 divisors (see below), whose sum is σ = 4514498352. Its totient is φ = 2077881696.

The previous prime is 3121122211. The next prime is 3121122281. The reversal of 3121122231 is 1322211213.

3121122231 is a `hidden beast` number, since 312 + 1 + 122 + 231 = 666.

3121122231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121122231 - 2⁶ = 3121122167 is a prime.

It is a super-2 number, since 2×3121122231² = 19482807961684834722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121122211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231966 + ... + 245051.

It is an arithmetic number, because the mean of its divisors is an integer number (376208196).

Almost surely, 2^3121122231 is an apocalyptic number.

3121122231 is a deficient number, since it is larger than the sum of its proper divisors (1393376121).

3121122231 is a wasteful number, since it uses less digits than its factorization.

3121122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477750 (or 477747 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 3121122231 is about 55867.0048508062. The cubic root of 3121122231 is about 1461.4038899825.

Adding to 3121122231 its reverse (1322211213), we get a palindrome (4443333444).

The spelling of 3121122231 in words is "three billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred thirty-one".