3201121311 has 16 divisors (see below), whose sum is σ = 4499040000. Its totient is φ = 2018953728.

The previous prime is 3201121279. The next prime is 3201121327. The reversal of 3201121311 is 1131211023.

It is a happy number.

It is not a de Polignac number, because 3201121311 - 2⁵ = 3201121279 is a prime.

It is a super-3 number, since 3×3201121311³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201121331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815 + ... + 80063.

It is an arithmetic number, because the mean of its divisors is an integer number (281190000).

Almost surely, 2^3201121311 is an apocalyptic number.

3201121311 is a deficient number, since it is larger than the sum of its proper divisors (1297918689).

3201121311 is a wasteful number, since it uses less digits than its factorization.

3201121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77998.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 3201121311 is about 56578.4527094900. The cubic root of 3201121311 is about 1473.7847020657.

Adding to 3201121311 its reverse (1131211023), we get a palindrome (4332332334).

The spelling of 3201121311 in words is "three billion, two hundred one million, one hundred twenty-one thousand, three hundred eleven".