43420012031 has 8 divisors (see below), whose sum is σ = 47373817728. Its totient is φ = 39467295000.

The previous prime is 43420011983. The next prime is 43420012033. The reversal of 43420012031 is 13021002434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43420012031 is a prime.

It is a super-2 number, since 2×43420012031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43420011994 and 43420012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420012033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187625 + ... + 349346.

It is an arithmetic number, because the mean of its divisors is an integer number (5921727216).

Almost surely, 2^43420012031 is an apocalyptic number.

43420012031 is a deficient number, since it is larger than the sum of its proper divisors (3953805697).

43420012031 is a wasteful number, since it uses less digits than its factorization.

43420012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544333.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 43420012031 its reverse (13021002434), we get a palindrome (56441014465).

The spelling of 43420012031 in words is "forty-three billion, four hundred twenty million, twelve thousand, thirty-one".