331522133 has 2 divisors, whose sum is σ = 331522134. Its totient is φ = 331522132.

The previous prime is 331522073. The next prime is 331522181. The reversal of 331522133 is 331225133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247653169 + 83868964 = 15737^2 + 9158^2 .

It is a cyclic number.

It is not a de Polignac number, because 331522133 - 2²² = 327327829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331522099 and 331522108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331522193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165761066 + 165761067.

It is an arithmetic number, because the mean of its divisors is an integer number (165761067).

Almost surely, 2^331522133 is an apocalyptic number.

It is an amenable number.

331522133 is a deficient number, since it is larger than the sum of its proper divisors (1).

331522133 is an equidigital number, since it uses as much as digits as its factorization.

331522133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 331522133 is about 18207.7492568412. The cubic root of 331522133 is about 692.1031767537.

Adding to 331522133 its reverse (331225133), we get a palindrome (662747266).

The spelling of 331522133 in words is "three hundred thirty-one million, five hundred twenty-two thousand, one hundred thirty-three".