43138423311 has 4 divisors (see below), whose sum is σ = 57517897752. Its totient is φ = 28758948872.

The previous prime is 43138423277. The next prime is 43138423337. The reversal of 43138423311 is 11332483134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43138423311 - 2¹⁹ = 43137899023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43138421311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7189737216 + ... + 7189737221.

It is an arithmetic number, because the mean of its divisors is an integer number (14379474438).

Almost surely, 2^43138423311 is an apocalyptic number.

43138423311 is a deficient number, since it is larger than the sum of its proper divisors (14379474441).

43138423311 is a wasteful number, since it uses less digits than its factorization.

43138423311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14379474440.

The product of its digits is 20736, while the sum is 33.

The spelling of 43138423311 in words is "forty-three billion, one hundred thirty-eight million, four hundred twenty-three thousand, three hundred eleven".