43213431233 has 4 divisors (see below), whose sum is σ = 49386778560. Its totient is φ = 37040083908.

The previous prime is 43213431211. The next prime is 43213431241. The reversal of 43213431233 is 33213431234.

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 43213431233 - 2²⁶ = 43146322369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43213431196 and 43213431205.

It is not an unprimeable number, because it can be changed into a prime (43213437233) 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, 3086673653 + ... + 3086673666.

It is an arithmetic number, because the mean of its divisors is an integer number (12346694640).

Almost surely, 2^43213431233 is an apocalyptic number.

It is an amenable number.

43213431233 is a deficient number, since it is larger than the sum of its proper divisors (6173347327).

43213431233 is an equidigital number, since it uses as much as digits as its factorization.

43213431233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173347326.

The product of its digits is 15552, while the sum is 29.

Adding to 43213431233 its reverse (33213431234), we get a palindrome (76426862467).

Subtracting from 43213431233 its reverse (33213431234), we obtain a palindrome (9999999999).

The spelling of 43213431233 in words is "forty-three billion, two hundred thirteen million, four hundred thirty-one thousand, two hundred thirty-three".