73443033431 has 4 divisors (see below), whose sum is σ = 73444086072. Its totient is φ = 73441980792.

The previous prime is 73443033427. The next prime is 73443033473. The reversal of 73443033431 is 13433034437.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73443033431 - 2² = 73443033427 is a prime.

It is a super-2 number, since 2×73443033431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73443033391 and 73443033400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73443033421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413621 + ... + 563886.

It is an arithmetic number, because the mean of its divisors is an integer number (18361021518).

Almost surely, 2^73443033431 is an apocalyptic number.

73443033431 is a deficient number, since it is larger than the sum of its proper divisors (1052641).

73443033431 is an equidigital number, since it uses as much as digits as its factorization.

73443033431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052640.

The product of its (nonzero) digits is 108864, while the sum is 35.

Adding to 73443033431 its reverse (13433034437), we get a palindrome (86876067868).

The spelling of 73443033431 in words is "seventy-three billion, four hundred forty-three million, thirty-three thousand, four hundred thirty-one".