320121001311 has 4 divisors (see below), whose sum is σ = 426828001752. Its totient is φ = 213414000872.

The previous prime is 320121001309. The next prime is 320121001327. The reversal of 320121001311 is 113100121023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320121001311 - 2¹ = 320121001309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320121001411) 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, 53353500216 + ... + 53353500221.

It is an arithmetic number, because the mean of its divisors is an integer number (106707000438).

Almost surely, 2^320121001311 is an apocalyptic number.

320121001311 is a deficient number, since it is larger than the sum of its proper divisors (106707000441).

320121001311 is a wasteful number, since it uses less digits than its factorization.

320121001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106707000440.

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

Adding to 320121001311 its reverse (113100121023), we get a palindrome (433221122334).

The spelling of 320121001311 in words is "three hundred twenty billion, one hundred twenty-one million, one thousand, three hundred eleven".