83431293 has 8 divisors (see below), whose sum is σ = 121354656. Its totient is φ = 50564400.

The previous prime is 83431277. The next prime is 83431301. The reversal of 83431293 is 39213438.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83431293 - 2⁴ = 83431277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2528221 = 83431293 / (8 + 3 + 4 + 3 + 1 + 2 + 9 + 3).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83431093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264078 + ... + 1264143.

It is an arithmetic number, because the mean of its divisors is an integer number (15169332).

Almost surely, 2^83431293 is an apocalyptic number.

It is an amenable number.

83431293 is a deficient number, since it is larger than the sum of its proper divisors (37923363).

83431293 is a wasteful number, since it uses less digits than its factorization.

83431293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528235.

The product of its digits is 15552, while the sum is 33.

The square root of 83431293 is about 9134.0731877952. The cubic root of 83431293 is about 436.9613166505.

The spelling of 83431293 in words is "eighty-three million, four hundred thirty-one thousand, two hundred ninety-three".