1031440323 has 8 divisors (see below), whose sum is σ = 1378446336. Its totient is φ = 686030600.

The previous prime is 1031440259. The next prime is 1031440349. The reversal of 1031440323 is 3230441301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031440323 - 2⁶ = 1031440259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031440323.

It is not an unprimeable number, because it can be changed into a prime (1031490323) 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, 397563 + ... + 400148.

It is an arithmetic number, because the mean of its divisors is an integer number (172305792).

Almost surely, 2^1031440323 is an apocalyptic number.

1031440323 is a deficient number, since it is larger than the sum of its proper divisors (347006013).

1031440323 is an equidigital number, since it uses as much as digits as its factorization.

1031440323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798145.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1031440323 is about 32116.0446350418. The cubic root of 1031440323 is about 1010.3721541344.

Adding to 1031440323 its reverse (3230441301), we get a palindrome (4261881624).

The spelling of 1031440323 in words is "one billion, thirty-one million, four hundred forty thousand, three hundred twenty-three".