1431312 has 20 divisors (see below), whose sum is σ = 3697680. Its totient is φ = 477088.

The previous prime is 1431307. The next prime is 1431317. The reversal of 1431312 is 2131341.

It is an interprime number because it is at equal distance from previous prime (1431307) and next prime (1431317).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1431291 and 1431300.

It is not an unprimeable number, because it can be changed into a prime (1431317) 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, 14862 + ... + 14957.

It is an arithmetic number, because the mean of its divisors is an integer number (184884).

2^1431312 is an apocalyptic number.

1431312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1431312 is an abundant number, since it is smaller than the sum of its proper divisors (2266368).

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

1431312 is a wasteful number, since it uses less digits than its factorization.

1431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29830 (or 29824 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 1431312 is about 1196.3745232995. The cubic root of 1431312 is about 112.6967618369.

Adding to 1431312 its reverse (2131341), we get a palindrome (3562653).

The spelling of 1431312 in words is "one million, four hundred thirty-one thousand, three hundred twelve".