233228537 has 2 divisors, whose sum is σ = 233228538. Its totient is φ = 233228536.

The previous prime is 233228467. The next prime is 233228549. The reversal of 233228537 is 735822332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133148521 + 100080016 = 11539^2 + 10004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233228537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 233228497 and 233228506.

It is not a weakly prime, because it can be changed into another prime (233221537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116614268 + 116614269.

It is an arithmetic number, because the mean of its divisors is an integer number (116614269).

Almost surely, 2^233228537 is an apocalyptic number.

It is an amenable number.

233228537 is a deficient number, since it is larger than the sum of its proper divisors (1).

233228537 is an equidigital number, since it uses as much as digits as its factorization.

233228537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 233228537 is about 15271.8216660620. The cubic root of 233228537 is about 615.5460697315.

The spelling of 233228537 in words is "two hundred thirty-three million, two hundred twenty-eight thousand, five hundred thirty-seven".