1368431 has 4 divisors (see below), whose sum is σ = 1427952. Its totient is φ = 1308912.

The previous prime is 1368401. The next prime is 1368439. The reversal of 1368431 is 1348631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1348631 = 181 ⋅7451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368431 is a prime.

It is a super-2 number, since 2×1368431² = 3745206803522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1368431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29726 + ... + 29771.

It is an arithmetic number, because the mean of its divisors is an integer number (356988).

2^1368431 is an apocalyptic number.

1368431 is a deficient number, since it is larger than the sum of its proper divisors (59521).

1368431 is an equidigital number, since it uses as much as digits as its factorization.

1368431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59520.

The product of its digits is 1728, while the sum is 26.

The square root of 1368431 is about 1169.7995554795. The cubic root of 1368431 is about 111.0216390462.

The spelling of 1368431 in words is "one million, three hundred sixty-eight thousand, four hundred thirty-one".