68417431 has 2 divisors, whose sum is σ = 68417432. Its totient is φ = 68417430.

The previous prime is 68417407. The next prime is 68417443. The reversal of 68417431 is 13471486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68417431 - 2⁵ = 68417399 is a prime.

It is a super-2 number, since 2×68417431² = 9361889729279522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68417491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34208715 + 34208716.

It is an arithmetic number, because the mean of its divisors is an integer number (34208716).

Almost surely, 2^68417431 is an apocalyptic number.

68417431 is a deficient number, since it is larger than the sum of its proper divisors (1).

68417431 is an equidigital number, since it uses as much as digits as its factorization.

68417431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 68417431 is about 8271.4829988340. The cubic root of 68417431 is about 408.9990076554. Note that the first 3 decimals are identical.

The spelling of 68417431 in words is "sixty-eight million, four hundred seventeen thousand, four hundred thirty-one".