331123201 has 4 divisors (see below), whose sum is σ = 331248852. Its totient is φ = 330997552.

The previous prime is 331123193. The next prime is 331123223. The reversal of 331123201 is 102321133.

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 245079025 + 86044176 = 15655^2 + 9276^2 .

It is a cyclic number.

It is not a de Polignac number, because 331123201 - 2³ = 331123193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331124201) 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, 58786 + ... + 64171.

It is an arithmetic number, because the mean of its divisors is an integer number (82812213).

Almost surely, 2^331123201 is an apocalyptic number.

It is an amenable number.

331123201 is a deficient number, since it is larger than the sum of its proper divisors (125651).

331123201 is a wasteful number, since it uses less digits than its factorization.

331123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125650.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331123201 is about 18196.7909533522. The cubic root of 331123201 is about 691.8254547971.

Adding to 331123201 its reverse (102321133), we get a palindrome (433444334).

The spelling of 331123201 in words is "three hundred thirty-one million, one hundred twenty-three thousand, two hundred one".