138081840331 has 8 divisors (see below), whose sum is σ = 138262815504. Its totient is φ = 137900958720.

The previous prime is 138081840317. The next prime is 138081840343. The reversal of 138081840331 is 133048180831.

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 138081840331 - 2¹¹ = 138081838283 is a prime.

It is a super-2 number, since 2×138081840331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138081840431) 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, 3219216 + ... + 3261826.

It is an arithmetic number, because the mean of its divisors is an integer number (17282851938).

Almost surely, 2^138081840331 is an apocalyptic number.

138081840331 is a deficient number, since it is larger than the sum of its proper divisors (180975173).

138081840331 is a wasteful number, since it uses less digits than its factorization.

138081840331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46781.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 138081840331 in words is "one hundred thirty-eight billion, eighty-one million, eight hundred forty thousand, three hundred thirty-one".