1072731323 has 4 divisors (see below), whose sum is σ = 1075914840. Its totient is φ = 1069547808.

The previous prime is 1072731287. The next prime is 1072731349. The reversal of 1072731323 is 3231372701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3231372701 = 16253 ⋅198817.

It is a cyclic number.

It is not a de Polignac number, because 1072731323 - 2¹⁸ = 1072469179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072731353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1591253 + ... + 1591926.

It is an arithmetic number, because the mean of its divisors is an integer number (268978710).

Almost surely, 2^1072731323 is an apocalyptic number.

1072731323 is a deficient number, since it is larger than the sum of its proper divisors (3183517).

1072731323 is an equidigital number, since it uses as much as digits as its factorization.

1072731323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183516.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 1072731323 is about 32752.5773489660. The cubic root of 1072731323 is about 1023.6786695605.

The spelling of 1072731323 in words is "one billion, seventy-two million, seven hundred thirty-one thousand, three hundred twenty-three".