1268431 has 8 divisors (see below), whose sum is σ = 1324800. Its totient is φ = 1212960.

The previous prime is 1268429. The next prime is 1268447. The reversal of 1268431 is 1348621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268431 - 2¹ = 1268429 is a prime.

It is a super-2 number, since 2×1268431² = 3217834403522, which contains 22 as substring.

It is a Duffinian number.

1268431 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1268396 and 1268405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5425 + ... + 5653.

It is an arithmetic number, because the mean of its divisors is an integer number (165600).

2^1268431 is an apocalyptic number.

1268431 is a deficient number, since it is larger than the sum of its proper divisors (56369).

1268431 is a wasteful number, since it uses less digits than its factorization.

1268431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449.

The product of its digits is 1152, while the sum is 25.

The square root of 1268431 is about 1126.2464206380. The cubic root of 1268431 is about 108.2485985663.

The spelling of 1268431 in words is "one million, two hundred sixty-eight thousand, four hundred thirty-one".