3113211321 has 16 divisors (see below), whose sum is σ = 5031453120. Its totient is φ = 1886794560.

The previous prime is 3113211317. The next prime is 3113211329. The reversal of 3113211321 is 1231123113.

3113211321 is a `hidden beast` number, since 311 + 32 + 1 + 1 + 321 = 666.

It is not a de Polignac number, because 3113211321 - 2² = 3113211317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3113211294 and 3113211303.

It is not an unprimeable number, because it can be changed into a prime (3113211329) 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, 5240800 + ... + 5241393.

It is an arithmetic number, because the mean of its divisors is an integer number (314465820).

Almost surely, 2^3113211321 is an apocalyptic number.

It is an amenable number.

3113211321 is a deficient number, since it is larger than the sum of its proper divisors (1918241799).

3113211321 is a wasteful number, since it uses less digits than its factorization.

3113211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482213 (or 10482207 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 3113211321 is about 55796.1586581012. The cubic root of 3113211321 is about 1460.1681361690.

Adding to 3113211321 its reverse (1231123113), we get a palindrome (4344334434).

The spelling of 3113211321 in words is "three billion, one hundred thirteen million, two hundred eleven thousand, three hundred twenty-one".