1431304 has 32 divisors (see below), whose sum is σ = 3124800. Its totient is φ = 601920.

The previous prime is 1431277. The next prime is 1431307. The reversal of 1431304 is 4031341.

It is a super-2 number, since 2×1431304² = 4097262280832, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207 + ... + 3625.

It is an arithmetic number, because the mean of its divisors is an integer number (97650).

2^1431304 is an apocalyptic number.

1431304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1431304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562400).

1431304 is an abundant number, since it is smaller than the sum of its proper divisors (1693496).

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

1431304 is a wasteful number, since it uses less digits than its factorization.

1431304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1431304 is about 1196.3711798602. The cubic root of 1431304 is about 112.6965518720.

Adding to 1431304 its reverse (4031341), we get a palindrome (5462645).

The spelling of 1431304 in words is "one million, four hundred thirty-one thousand, three hundred four".