3138818031 has 24 divisors (see below), whose sum is σ = 4777035120. Its totient is φ = 1980516096.

The previous prime is 3138817999. The next prime is 3138818047. The reversal of 3138818031 is 1308188313.

It is not a de Polignac number, because 3138818031 - 2⁵ = 3138817999 is a prime.

It is a super-2 number, since 2×3138818031² = 19704357263461433922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138018031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182791 + ... + 199223.

It is an arithmetic number, because the mean of its divisors is an integer number (199043130).

Almost surely, 2^3138818031 is an apocalyptic number.

3138818031 is a deficient number, since it is larger than the sum of its proper divisors (1638217089).

3138818031 is a wasteful number, since it uses less digits than its factorization.

3138818031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17575 (or 17572 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 3138818031 is about 56025.1553411501. The cubic root of 3138818031 is about 1464.1605896915.

The spelling of 3138818031 in words is "three billion, one hundred thirty-eight million, eight hundred eighteen thousand, thirty-one".