73165731 has 4 divisors (see below), whose sum is σ = 97554312. Its totient is φ = 48777152.

The previous prime is 73165717. The next prime is 73165759. The reversal of 73165731 is 13756137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13756137 = 3 ⋅4585379.

It is a cyclic number.

It is not a de Polignac number, because 73165731 - 2⁶ = 73165667 is a prime.

It is a super-2 number, since 2×73165731² = 10706448385528722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73165692 and 73165701.

It is not an unprimeable number, because it can be changed into a prime (73165531) 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, 12194286 + ... + 12194291.

It is an arithmetic number, because the mean of its divisors is an integer number (24388578).

Almost surely, 2^73165731 is an apocalyptic number.

73165731 is a deficient number, since it is larger than the sum of its proper divisors (24388581).

73165731 is a wasteful number, since it uses less digits than its factorization.

73165731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24388580.

The product of its digits is 13230, while the sum is 33.

The square root of 73165731 is about 8553.6969200457. The cubic root of 73165731 is about 418.2499573349.

The spelling of 73165731 in words is "seventy-three million, one hundred sixty-five thousand, seven hundred thirty-one".