38140031 has 2 divisors, whose sum is σ = 38140032. Its totient is φ = 38140030.

The previous prime is 38140009. The next prime is 38140051. The reversal of 38140031 is 13004183.

It is a happy number.

It is an a-pointer prime, because the next prime (38140051) can be obtained adding 38140031 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38140031 - 2²² = 33945727 is a prime.

It is a super-2 number, since 2×38140031² = 2909323929361922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38139985 and 38140012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38140051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19070015 + 19070016.

It is an arithmetic number, because the mean of its divisors is an integer number (19070016).

Almost surely, 2^38140031 is an apocalyptic number.

38140031 is a deficient number, since it is larger than the sum of its proper divisors (1).

38140031 is an equidigital number, since it uses as much as digits as its factorization.

38140031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 38140031 is about 6175.7615724702. The cubic root of 38140031 is about 336.6100000477.

The spelling of 38140031 in words is "thirty-eight million, one hundred forty thousand, thirty-one".