43132138321 has 8 divisors (see below), whose sum is σ = 43344194600. Its totient is φ = 42920288640.

The previous prime is 43132138289. The next prime is 43132138333. The reversal of 43132138321 is 12383123134.

It can be written as a sum of positive squares in 4 ways, for example, as 659462400 + 42472675921 = 25680^2 + 206089^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 43132138321 - 2⁵ = 43132138289 is a prime.

It is a super-2 number, since 2×43132138321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43132138121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375565 + ... + 476773.

It is an arithmetic number, because the mean of its divisors is an integer number (5418024325).

Almost surely, 2^43132138321 is an apocalyptic number.

It is an amenable number.

43132138321 is a deficient number, since it is larger than the sum of its proper divisors (212056279).

43132138321 is a wasteful number, since it uses less digits than its factorization.

43132138321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103299.

The product of its digits is 10368, while the sum is 31.

The spelling of 43132138321 in words is "forty-three billion, one hundred thirty-two million, one hundred thirty-eight thousand, three hundred twenty-one".