73418131 has 4 divisors (see below), whose sum is σ = 74513992. Its totient is φ = 72322272.

The previous prime is 73418119. The next prime is 73418153. The reversal of 73418131 is 13181437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13181437 = 107 ⋅123191.

It is a cyclic number.

It is not a de Polignac number, because 73418131 - 2⁵ = 73418099 is a prime.

It is a super-2 number, since 2×73418131² = 10780443919066322, which 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 73418131.

It is not an unprimeable number, because it can be changed into a prime (73418431) 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, 547830 + ... + 547963.

It is an arithmetic number, because the mean of its divisors is an integer number (18628498).

Almost surely, 2^73418131 is an apocalyptic number.

73418131 is a deficient number, since it is larger than the sum of its proper divisors (1095861).

73418131 is a wasteful number, since it uses less digits than its factorization.

73418131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095860.

The product of its digits is 2016, while the sum is 28.

The square root of 73418131 is about 8568.4380723677. The cubic root of 73418131 is about 418.7303513169.

Adding to 73418131 its reverse (13181437), we get a palindrome (86599568).

The spelling of 73418131 in words is "seventy-three million, four hundred eighteen thousand, one hundred thirty-one".