67312303 has 2 divisors, whose sum is σ = 67312304. Its totient is φ = 67312302.

The previous prime is 67312247. The next prime is 67312321. The reversal of 67312303 is 30321376.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67312303 is a prime.

It is a super-2 number, since 2×67312303² = 9061892270327618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67312373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33656151 + 33656152.

It is an arithmetic number, because the mean of its divisors is an integer number (33656152).

Almost surely, 2^67312303 is an apocalyptic number.

67312303 is a deficient number, since it is larger than the sum of its proper divisors (1).

67312303 is an equidigital number, since it uses as much as digits as its factorization.

67312303 is an evil number, because the sum of its binary digits is even.

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

The square root of 67312303 is about 8204.4075349778. The cubic root of 67312303 is about 406.7848935869.

Adding to 67312303 its reverse (30321376), we get a palindrome (97633679).

The spelling of 67312303 in words is "sixty-seven million, three hundred twelve thousand, three hundred three".