68324431 has 4 divisors (see below), whose sum is σ = 78085072. Its totient is φ = 58563792.

The previous prime is 68324429. The next prime is 68324489. The reversal of 68324431 is 13442386.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68324431 - 2¹ = 68324429 is a prime.

It is a super-2 number, since 2×68324431² = 9336455742947522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68324393 and 68324402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68327431) 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 in 3 ways as a sum of consecutive naturals, for example, 4880310 + ... + 4880323.

It is an arithmetic number, because the mean of its divisors is an integer number (19521268).

Almost surely, 2^68324431 is an apocalyptic number.

68324431 is a deficient number, since it is larger than the sum of its proper divisors (9760641).

68324431 is an equidigital number, since it uses as much as digits as its factorization.

68324431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9760640.

The product of its digits is 13824, while the sum is 31.

The square root of 68324431 is about 8265.8593624620. The cubic root of 68324431 is about 408.8136058031.

The spelling of 68324431 in words is "sixty-eight million, three hundred twenty-four thousand, four hundred thirty-one".