6445431233 has 2 divisors, whose sum is σ = 6445431234. Its totient is φ = 6445431232.

The previous prime is 6445431203. The next prime is 6445431241. The reversal of 6445431233 is 3321345446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4207857424 + 2237573809 = 64868^2 + 47303^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445431233 - 2⁶ = 6445431169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6445431193 and 6445431202.

It is not a weakly prime, because it can be changed into another prime (6445431203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222715616 + 3222715617.

It is an arithmetic number, because the mean of its divisors is an integer number (3222715617).

Almost surely, 2^6445431233 is an apocalyptic number.

It is an amenable number.

6445431233 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445431233 is an equidigital number, since it uses as much as digits as its factorization.

6445431233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 35.

The square root of 6445431233 is about 80283.4430813726. The cubic root of 6445431233 is about 1861.0183687003.

Adding to 6445431233 its reverse (3321345446), we get a palindrome (9766776679).

The spelling of 6445431233 in words is "six billion, four hundred forty-five million, four hundred thirty-one thousand, two hundred thirty-three".