331142233 has 2 divisors, whose sum is σ = 331142234. Its totient is φ = 331142232.

The previous prime is 331142171. The next prime is 331142237. The reversal of 331142233 is 332241133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246741264 + 84400969 = 15708^2 + 9187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331142233 is a prime.

It is a super-3 number, since 3×331142233³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (331142237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165571116 + 165571117.

It is an arithmetic number, because the mean of its divisors is an integer number (165571117).

Almost surely, 2^331142233 is an apocalyptic number.

It is an amenable number.

331142233 is a deficient number, since it is larger than the sum of its proper divisors (1).

331142233 is an equidigital number, since it uses as much as digits as its factorization.

331142233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 331142233 is about 18197.3138951879. The cubic root of 331142233 is about 691.8387092492.

Adding to 331142233 its reverse (332241133), we get a palindrome (663383366).

The spelling of 331142233 in words is "three hundred thirty-one million, one hundred forty-two thousand, two hundred thirty-three".