43400012232231 has 80 divisors (see below), whose sum is σ = 68309245620000. Its totient is φ = 27423020427264.

The previous prime is 43400012232217. The next prime is 43400012232359. The reversal of 43400012232231 is 13223221000434.

43400012232231 is a `hidden beast` number, since 4 + 3 + 400 + 0 + 1 + 2 + 23 + 2 + 231 = 666.

It is not a de Polignac number, because 43400012232231 - 2²⁵ = 43399978677799 is a prime.

It is a super-2 number, since 2×43400012232231² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 43400012232195 and 43400012232204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43400012232211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28312735 + ... + 29806223.

It is an arithmetic number, because the mean of its divisors is an integer number (853865570250).

Almost surely, 2^{43400012232231} is an apocalyptic number.

43400012232231 is a deficient number, since it is larger than the sum of its proper divisors (24909233387769).

43400012232231 is a wasteful number, since it uses less digits than its factorization.

43400012232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493758 (or 1493749 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 43400012232231 its reverse (13223221000434), we get a palindrome (56623233232665).

The spelling of 43400012232231 in words is "forty-three trillion, four hundred billion, twelve million, two hundred thirty-two thousand, two hundred thirty-one".