43131723405 has 32 divisors (see below), whose sum is σ = 70653534336. Its totient is φ = 22456568064.

The previous prime is 43131723377. The next prime is 43131723419. The reversal of 43131723405 is 50432713134.

It is a happy number.

It is not a de Polignac number, because 43131723405 - 2¹³ = 43131715213 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1255639 + ... + 1289531.

It is an arithmetic number, because the mean of its divisors is an integer number (2207922948).

Almost surely, 2^43131723405 is an apocalyptic number.

It is an amenable number.

43131723405 is a deficient number, since it is larger than the sum of its proper divisors (27521810931).

43131723405 is a wasteful number, since it uses less digits than its factorization.

43131723405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35917.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 43131723405 in words is "forty-three billion, one hundred thirty-one million, seven hundred twenty-three thousand, four hundred five".