67351231 has 2 divisors, whose sum is σ = 67351232. Its totient is φ = 67351230.

The previous prime is 67351223. The next prime is 67351237. The reversal of 67351231 is 13215376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67351231 - 2³ = 67351223 is a prime.

It is a super-2 number, since 2×67351231² = 9072376634430722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67351231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67351237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33675615 + 33675616.

It is an arithmetic number, because the mean of its divisors is an integer number (33675616).

Almost surely, 2^67351231 is an apocalyptic number.

67351231 is a deficient number, since it is larger than the sum of its proper divisors (1).

67351231 is an equidigital number, since it uses as much as digits as its factorization.

67351231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 67351231 is about 8206.7795754486. The cubic root of 67351231 is about 406.8632956521.

The spelling of 67351231 in words is "sixty-seven million, three hundred fifty-one thousand, two hundred thirty-one".