231132337 has 2 divisors, whose sum is σ = 231132338. Its totient is φ = 231132336.

The previous prime is 231132299. The next prime is 231132371. The reversal of 231132337 is 733231132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168896016 + 62236321 = 12996^2 + 7889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231132337 is a prime.

It is equal to p_12701482 and since 231132337 and 12701482 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (231132437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566168 + 115566169.

It is an arithmetic number, because the mean of its divisors is an integer number (115566169).

Almost surely, 2^231132337 is an apocalyptic number.

It is an amenable number.

231132337 is a deficient number, since it is larger than the sum of its proper divisors (1).

231132337 is an equidigital number, since it uses as much as digits as its factorization.

231132337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 25.

The square root of 231132337 is about 15203.0370978959. The cubic root of 231132337 is about 613.6963922134.

Adding to 231132337 its reverse (733231132), we get a palindrome (964363469).

The spelling of 231132337 in words is "two hundred thirty-one million, one hundred thirty-two thousand, three hundred thirty-seven".