83445313 has 4 divisors (see below), whose sum is σ = 95366080. Its totient is φ = 71524548.

The previous prime is 83445289. The next prime is 83445319. The reversal of 83445313 is 31354438.

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 83445313 - 2⁵ = 83445281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83445319) 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, 5960373 + ... + 5960386.

It is an arithmetic number, because the mean of its divisors is an integer number (23841520).

Almost surely, 2^83445313 is an apocalyptic number.

It is an amenable number.

83445313 is a deficient number, since it is larger than the sum of its proper divisors (11920767).

83445313 is a wasteful number, since it uses less digits than its factorization.

83445313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11920766.

The product of its digits is 17280, while the sum is 31.

The square root of 83445313 is about 9134.8406116363. The cubic root of 83445313 is about 436.9857912983.

The spelling of 83445313 in words is "eighty-three million, four hundred forty-five thousand, three hundred thirteen".