73090931 has 4 divisors (see below), whose sum is σ = 73761600. Its totient is φ = 72420264.

The previous prime is 73090921. The next prime is 73090937. The reversal of 73090931 is 13909037.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73090931 is a prime.

It is a super-2 number, since 2×73090931² = 10684568388893522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73090937) 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, 335171 + ... + 335388.

It is an arithmetic number, because the mean of its divisors is an integer number (18440400).

Almost surely, 2^73090931 is an apocalyptic number.

73090931 is a deficient number, since it is larger than the sum of its proper divisors (670669).

73090931 is a wasteful number, since it uses less digits than its factorization.

73090931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670668.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 73090931 is about 8549.3234235231. The cubic root of 73090931 is about 418.1073779982.

Adding to 73090931 its reverse (13909037), we get a palindrome (86999968).

The spelling of 73090931 in words is "seventy-three million, ninety thousand, nine hundred thirty-one".