2139040331 has 8 divisors (see below), whose sum is σ = 2210212224. Its totient is φ = 2068004160.

The previous prime is 2139040313. The next prime is 2139040333. The reversal of 2139040331 is 1330409312.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2139040331 is a prime.

It is a super-2 number, since 2×2139040331² = 9150987075289179122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2139040331.

It is not an unprimeable number, because it can be changed into a prime (2139040333) 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, 1376 + ... + 65421.

It is an arithmetic number, because the mean of its divisors is an integer number (276276528).

Almost surely, 2^2139040331 is an apocalyptic number.

2139040331 is a deficient number, since it is larger than the sum of its proper divisors (71171893).

2139040331 is a wasteful number, since it uses less digits than its factorization.

2139040331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67861.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 2139040331 is about 46249.7603345142. The cubic root of 2139040331 is about 1288.4660835461.

Adding to 2139040331 its reverse (1330409312), we get a palindrome (3469449643).

The spelling of 2139040331 in words is "two billion, one hundred thirty-nine million, forty thousand, three hundred thirty-one".