67430431 has 2 divisors, whose sum is σ = 67430432. Its totient is φ = 67430430.

The previous prime is 67430417. The next prime is 67430443. The reversal of 67430431 is 13403476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67430431 - 2⁵ = 67430399 is a prime.

It is a super-2 number, since 2×67430431² = 9093726049691522, 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 67430431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67440431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33715215 + 33715216.

It is an arithmetic number, because the mean of its divisors is an integer number (33715216).

Almost surely, 2^67430431 is an apocalyptic number.

67430431 is a deficient number, since it is larger than the sum of its proper divisors (1).

67430431 is an equidigital number, since it uses as much as digits as its factorization.

67430431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 67430431 is about 8211.6034366012. The cubic root of 67430431 is about 407.0227134283.

The spelling of 67430431 in words is "sixty-seven million, four hundred thirty thousand, four hundred thirty-one".