73131419 has 4 divisors (see below), whose sum is σ = 73183680. Its totient is φ = 73079160.

The previous prime is 73131407. The next prime is 73131427. The reversal of 73131419 is 91413137.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91413137 = 2927 ⋅31231.

It is a cyclic number.

It is not a de Polignac number, because 73131419 - 2⁴ = 73131403 is a prime.

It is a super-2 number, since 2×73131419² = 10696408889907122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73131391 and 73131400.

It is not an unprimeable number, because it can be changed into a prime (73131439) 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, 23972 + ... + 26849.

It is an arithmetic number, because the mean of its divisors is an integer number (18295920).

Almost surely, 2^73131419 is an apocalyptic number.

73131419 is a deficient number, since it is larger than the sum of its proper divisors (52261).

73131419 is a wasteful number, since it uses less digits than its factorization.

73131419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52260.

The product of its digits is 2268, while the sum is 29.

The square root of 73131419 is about 8551.6910023691. The cubic root of 73131419 is about 418.1845658996.

The spelling of 73131419 in words is "seventy-three million, one hundred thirty-one thousand, four hundred nineteen".