67070431 has 2 divisors, whose sum is σ = 67070432. Its totient is φ = 67070430.

The previous prime is 67070357. The next prime is 67070441. The reversal of 67070431 is 13407076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67070431 - 2⁷ = 67070303 is a prime.

It is a super-2 number, since 2×67070431² = 8996885429051522, 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 67070431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67070441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33535215 + 33535216.

It is an arithmetic number, because the mean of its divisors is an integer number (33535216).

Almost surely, 2^67070431 is an apocalyptic number.

67070431 is a deficient number, since it is larger than the sum of its proper divisors (1).

67070431 is an equidigital number, since it uses as much as digits as its factorization.

67070431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 67070431 is about 8189.6538998910. The cubic root of 67070431 is about 406.2970780629.

The spelling of 67070431 in words is "sixty-seven million, seventy thousand, four hundred thirty-one".