1531343 has 16 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 1238400.

The previous prime is 1531337. The next prime is 1531357. The reversal of 1531343 is 3431351.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1531343 - 2⁶ = 1531279 is a prime.

It is a super-2 number, since 2×1531343² = 4690022767298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3338 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^1531343 is an apocalyptic number.

1531343 is a deficient number, since it is larger than the sum of its proper divisors (334897).

1531343 is a wasteful number, since it uses less digits than its factorization.

1531343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 540, while the sum is 20.

The square root of 1531343 is about 1237.4744441806. The cubic root of 1531343 is about 115.2632406995.

Adding to 1531343 its reverse (3431351), we get a palindrome (4962694).

The spelling of 1531343 in words is "one million, five hundred thirty-one thousand, three hundred forty-three".