1431365 has 24 divisors (see below), whose sum is σ = 1984248. Its totient is φ = 984960.

The previous prime is 1431361. The next prime is 1431373. The reversal of 1431365 is 5631341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43681 + 1387684 = 209^2 + 1178^2 .

It is not a de Polignac number, because 1431365 - 2² = 1431361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23435 + ... + 23495.

It is an arithmetic number, because the mean of its divisors is an integer number (82677).

2^1431365 is an apocalyptic number.

It is an amenable number.

1431365 is a deficient number, since it is larger than the sum of its proper divisors (552883).

1431365 is a wasteful number, since it uses less digits than its factorization.

1431365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 98 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 1431365 is about 1196.3966733488. The cubic root of 1431365 is about 112.6981528345.

The spelling of 1431365 in words is "one million, four hundred thirty-one thousand, three hundred sixty-five".