73000044031 has 4 divisors (see below), whose sum is σ = 74973018232. Its totient is φ = 71027069832.

The previous prime is 73000044023. The next prime is 73000044043. The reversal of 73000044031 is 13044000037.

It is a happy number.

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

It is not a de Polignac number, because 73000044031 - 2³ = 73000044023 is a prime.

It is a super-2 number, since 2×73000044031² (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 = 73000043993 and 73000044011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000047031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986487045 + ... + 986487118.

It is an arithmetic number, because the mean of its divisors is an integer number (18743254558).

Almost surely, 2^73000044031 is an apocalyptic number.

73000044031 is a deficient number, since it is larger than the sum of its proper divisors (1972974201).

73000044031 is a wasteful number, since it uses less digits than its factorization.

73000044031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972974200.

The product of its (nonzero) digits is 1008, while the sum is 22.

Adding to 73000044031 its reverse (13044000037), we get a palindrome (86044044068).

The spelling of 73000044031 in words is "seventy-three billion, forty-four thousand, thirty-one".