43320312423 has 24 divisors (see below), whose sum is σ = 65258234496. Its totient is φ = 27660441600.

The previous prime is 43320312337. The next prime is 43320312473. The reversal of 43320312423 is 32421302334.

43320312423 is a `hidden beast` number, since 4 + 3 + 320 + 312 + 4 + 23 = 666.

It is not a de Polignac number, because 43320312423 - 2¹⁶ = 43320246887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43320312473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 773298 + ... + 827423.

It is an arithmetic number, because the mean of its divisors is an integer number (2719093104).

Almost surely, 2^43320312423 is an apocalyptic number.

43320312423 is a deficient number, since it is larger than the sum of its proper divisors (21937922073).

43320312423 is a wasteful number, since it uses less digits than its factorization.

43320312423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600855 (or 1600852 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 43320312423 its reverse (32421302334), we get a palindrome (75741614757).

The spelling of 43320312423 in words is "forty-three billion, three hundred twenty million, three hundred twelve thousand, four hundred twenty-three".