131304233 has 2 divisors, whose sum is σ = 131304234. Its totient is φ = 131304232.

The previous prime is 131304221. The next prime is 131304247. The reversal of 131304233 is 332403131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115519504 + 15784729 = 10748^2 + 3973^2 .

It is a cyclic number.

It is not a de Polignac number, because 131304233 - 2⁶ = 131304169 is a prime.

It is not a weakly prime, because it can be changed into another prime (131304293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65652116 + 65652117.

It is an arithmetic number, because the mean of its divisors is an integer number (65652117).

Almost surely, 2^131304233 is an apocalyptic number.

It is an amenable number.

131304233 is a deficient number, since it is larger than the sum of its proper divisors (1).

131304233 is an equidigital number, since it uses as much as digits as its factorization.

131304233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 131304233 is about 11458.8059151030. The cubic root of 131304233 is about 508.2681652431.

Adding to 131304233 its reverse (332403131), we get a palindrome (463707364).

The spelling of 131304233 in words is "one hundred thirty-one million, three hundred four thousand, two hundred thirty-three".