3121322401 has 4 divisors (see below), whose sum is σ = 3132926100. Its totient is φ = 3109718704.

The previous prime is 3121322353. The next prime is 3121322437. The reversal of 3121322401 is 1042231213.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 556912801 + 2564409600 = 23599^2 + 50640^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121322401 - 2²³ = 3112933793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121322201) 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, 5801446 + ... + 5801983.

It is an arithmetic number, because the mean of its divisors is an integer number (783231525).

Almost surely, 2^3121322401 is an apocalyptic number.

It is an amenable number.

3121322401 is a deficient number, since it is larger than the sum of its proper divisors (11603699).

3121322401 is a wasteful number, since it uses less digits than its factorization.

3121322401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11603698.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3121322401 is about 55868.7963088520. The cubic root of 3121322401 is about 1461.4351311987.

Adding to 3121322401 its reverse (1042231213), we get a palindrome (4163553614).

The spelling of 3121322401 in words is "three billion, one hundred twenty-one million, three hundred twenty-two thousand, four hundred one".