43243412031 has 32 divisors (see below), whose sum is σ = 66299904000. Its totient is φ = 27823721184.

The previous prime is 43243412021. The next prime is 43243412039. The reversal of 43243412031 is 13021434234.

43243412031 is a `hidden beast` number, since 4 + 3 + 243 + 412 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 43243412031 - 2²⁶ = 43176303167 is a prime.

It is a super-2 number, since 2×43243412031² (a number of 22 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 = 43243411986 and 43243412004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43243412039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2244666 + ... + 2263848.

It is an arithmetic number, because the mean of its divisors is an integer number (2071872000).

Almost surely, 2^43243412031 is an apocalyptic number.

43243412031 is a deficient number, since it is larger than the sum of its proper divisors (23056491969).

43243412031 is a wasteful number, since it uses less digits than its factorization.

43243412031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22100 (or 22094 counting only the distinct ones).

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

Adding to 43243412031 its reverse (13021434234), we get a palindrome (56264846265).

The spelling of 43243412031 in words is "forty-three billion, two hundred forty-three million, four hundred twelve thousand, thirty-one".