43312412231 has 16 divisors (see below), whose sum is σ = 47660583168. Its totient is φ = 39033321600.

The previous prime is 43312412207. The next prime is 43312412237. The reversal of 43312412231 is 13221421334.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43312412231 is a prime.

It is a super-2 number, since 2×43312412231² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43312412231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43312412237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401215 + ... + 1431791.

It is an arithmetic number, because the mean of its divisors is an integer number (2978786448).

Almost surely, 2^43312412231 is an apocalyptic number.

43312412231 is a deficient number, since it is larger than the sum of its proper divisors (4348170937).

43312412231 is a wasteful number, since it uses less digits than its factorization.

43312412231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31702.

The product of its digits is 3456, while the sum is 26.

Adding to 43312412231 its reverse (13221421334), we get a palindrome (56533833565).

The spelling of 43312412231 in words is "forty-three billion, three hundred twelve million, four hundred twelve thousand, two hundred thirty-one".