83213423431 has 4 divisors (see below), whose sum is σ = 83405602672. Its totient is φ = 83021244192.

The previous prime is 83213423417. The next prime is 83213423443. The reversal of 83213423431 is 13432431238.

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

It is a cyclic number.

It is not a de Polignac number, because 83213423431 - 2⁷ = 83213423303 is a prime.

It is a super-2 number, since 2×83213423431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83213423731) 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, 96088971 + ... + 96089836.

It is an arithmetic number, because the mean of its divisors is an integer number (20851400668).

Almost surely, 2^83213423431 is an apocalyptic number.

83213423431 is a deficient number, since it is larger than the sum of its proper divisors (192179241).

83213423431 is a wasteful number, since it uses less digits than its factorization.

83213423431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192179240.

The product of its digits is 41472, while the sum is 34.

Adding to 83213423431 its reverse (13432431238), we get a palindrome (96645854669).

The spelling of 83213423431 in words is "eighty-three billion, two hundred thirteen million, four hundred twenty-three thousand, four hundred thirty-one".