43838131 has 2 divisors, whose sum is σ = 43838132. Its totient is φ = 43838130.

The previous prime is 43838099. The next prime is 43838153. The reversal of 43838131 is 13183834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43838131 - 2⁵ = 43838099 is a prime.

It is a super-2 number, since 2×43838131² = 3843563459146322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43838093 and 43838102.

It is not a weakly prime, because it can be changed into another prime (43838191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21919065 + 21919066.

It is an arithmetic number, because the mean of its divisors is an integer number (21919066).

Almost surely, 2^43838131 is an apocalyptic number.

43838131 is a deficient number, since it is larger than the sum of its proper divisors (1).

43838131 is an equidigital number, since it uses as much as digits as its factorization.

43838131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 43838131 is about 6621.0370033704. The cubic root of 43838131 is about 352.6013819014.

The spelling of 43838131 in words is "forty-three million, eight hundred thirty-eight thousand, one hundred thirty-one".