73233445431 has 4 divisors (see below), whose sum is σ = 97644593912. Its totient is φ = 48822296952.

The previous prime is 73233445429. The next prime is 73233445471. The reversal of 73233445431 is 13454433237.

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

It is not a de Polignac number, because 73233445431 - 2¹ = 73233445429 is a prime.

It is a super-2 number, since 2×73233445431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73233445431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73233445471) 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, 12205574236 + ... + 12205574241.

It is an arithmetic number, because the mean of its divisors is an integer number (24411148478).

Almost surely, 2^73233445431 is an apocalyptic number.

73233445431 is a deficient number, since it is larger than the sum of its proper divisors (24411148481).

73233445431 is a wasteful number, since it uses less digits than its factorization.

73233445431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24411148480.

The product of its digits is 362880, while the sum is 39.

Adding to 73233445431 its reverse (13454433237), we get a palindrome (86687878668).

The spelling of 73233445431 in words is "seventy-three billion, two hundred thirty-three million, four hundred forty-five thousand, four hundred thirty-one".