3121133011 has 4 divisors (see below), whose sum is σ = 3122356192. Its totient is φ = 3119909832.

The previous prime is 3121133009. The next prime is 3121133053. The reversal of 3121133011 is 1103311213.

3121133011 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 an emirpimes, since its reverse is a distinct semiprime: 1103311213 = 131 ⋅8422223.

It is a cyclic number.

It is not a de Polignac number, because 3121133011 - 2¹ = 3121133009 is a prime.

It is a super-2 number, since 2×3121133011² = 19482942544707852242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121433011) 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, 607755 + ... + 612868.

It is an arithmetic number, because the mean of its divisors is an integer number (780589048).

Almost surely, 2^3121133011 is an apocalyptic number.

3121133011 is a deficient number, since it is larger than the sum of its proper divisors (1223181).

3121133011 is a wasteful number, since it uses less digits than its factorization.

3121133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223180.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 3121133011 is about 55867.1013298524. The cubic root of 3121133011 is about 1461.4055724880.

Adding to 3121133011 its reverse (1103311213), we get a palindrome (4224444224).

The spelling of 3121133011 in words is "three billion, one hundred twenty-one million, one hundred thirty-three thousand, eleven".