73812313 has 4 divisors (see below), whose sum is σ = 77021568. Its totient is φ = 70603060.

The previous prime is 73812311. The next prime is 73812329. The reversal of 73812313 is 31321837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73812313 - 2¹ = 73812311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73812311) 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, 1604593 + ... + 1604638.

It is an arithmetic number, because the mean of its divisors is an integer number (19255392).

Almost surely, 2^73812313 is an apocalyptic number.

It is an amenable number.

73812313 is a deficient number, since it is larger than the sum of its proper divisors (3209255).

73812313 is a wasteful number, since it uses less digits than its factorization.

73812313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209254.

The product of its digits is 3024, while the sum is 28.

The square root of 73812313 is about 8591.4092557624. The cubic root of 73812313 is about 419.4784020043.

The spelling of 73812313 in words is "seventy-three million, eight hundred twelve thousand, three hundred thirteen".