83120312 has 32 divisors (see below), whose sum is σ = 170417520. Its totient is φ = 37693440.

The previous prime is 83120311. The next prime is 83120371. The reversal of 83120312 is 21302138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83120311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49958 + ... + 51594.

Almost surely, 2^83120312 is an apocalyptic number.

It is an amenable number.

83120312 is an abundant number, since it is smaller than the sum of its proper divisors (87297208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83120312 is a wasteful number, since it uses less digits than its factorization.

83120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 83120312 is about 9117.0341668769. The cubic root of 83120312 is about 436.4177322350.

The spelling of 83120312 in words is "eighty-three million, one hundred twenty thousand, three hundred twelve".