73080321531 has 16 divisors (see below), whose sum is σ = 117911107584. Its totient is φ = 39303702144.

The previous prime is 73080321527. The next prime is 73080321533. The reversal of 73080321531 is 13512308037.

It is not a de Polignac number, because 73080321531 - 2² = 73080321527 is a prime.

It is a super-2 number, since 2×73080321531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73080321492 and 73080321501.

It is not an unprimeable number, because it can be changed into a prime (73080321533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102353035 + ... + 102353748.

It is an arithmetic number, because the mean of its divisors is an integer number (7369444224).

Almost surely, 2^73080321531 is an apocalyptic number.

73080321531 is a deficient number, since it is larger than the sum of its proper divisors (44830786053).

73080321531 is a wasteful number, since it uses less digits than its factorization.

73080321531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204706810.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 73080321531 its reverse (13512308037), we get a palindrome (86592629568).

The spelling of 73080321531 in words is "seventy-three billion, eighty million, three hundred twenty-one thousand, five hundred thirty-one".