73381931 has 4 divisors (see below), whose sum is σ = 83865072. Its totient is φ = 62898792.

The previous prime is 73381921. The next prime is 73381949. The reversal of 73381931 is 13918337.

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

It is a cyclic number.

It is not a de Polignac number, because 73381931 - 2¹⁴ = 73365547 is a prime.

It is a super-2 number, since 2×73381931² = 10769815594577522, 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 = 73381891 and 73381900.

It is not an unprimeable number, because it can be changed into a prime (73381921) 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, 5241560 + ... + 5241573.

It is an arithmetic number, because the mean of its divisors is an integer number (20966268).

Almost surely, 2^73381931 is an apocalyptic number.

73381931 is a deficient number, since it is larger than the sum of its proper divisors (10483141).

73381931 is a wasteful number, since it uses less digits than its factorization.

73381931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483140.

The product of its digits is 13608, while the sum is 35.

The square root of 73381931 is about 8566.3254082483. The cubic root of 73381931 is about 418.6615194062.

The spelling of 73381931 in words is "seventy-three million, three hundred eighty-one thousand, nine hundred thirty-one".