1431320 has 32 divisors (see below), whose sum is σ = 3514320. Its totient is φ = 520320.

The previous prime is 1431317. The next prime is 1431323. The reversal of 1431320 is 231341.

It is an interprime number because it is at equal distance from previous prime (1431317) and next prime (1431323).

It is a junction number, because it is equal to n+sod(n) for n = 1431295 and 1431304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431323) 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 7 ways as a sum of consecutive naturals, for example, 1187 + ... + 2066.

2^1431320 is an apocalyptic number.

1431320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431320 is an abundant number, since it is smaller than the sum of its proper divisors (2083000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1431320 is a wasteful number, since it uses less digits than its factorization.

1431320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275 (or 3271 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1431320 is about 1196.3778667294. The cubic root of 1431320 is about 112.6969718010.

Adding to 1431320 its reverse (231341), we get a palindrome (1662661).

The spelling of 1431320 in words is "one million, four hundred thirty-one thousand, three hundred twenty".