38731723 has 2 divisors, whose sum is σ = 38731724. Its totient is φ = 38731722.

The previous prime is 38731703. The next prime is 38731739. The reversal of 38731723 is 32713783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38731723 - 2²¹ = 36634571 is a prime.

It is not a weakly prime, because it can be changed into another prime (38731703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19365861 + 19365862.

It is an arithmetic number, because the mean of its divisors is an integer number (19365862).

Almost surely, 2^38731723 is an apocalyptic number.

38731723 is a deficient number, since it is larger than the sum of its proper divisors (1).

38731723 is an equidigital number, since it uses as much as digits as its factorization.

38731723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 38731723 is about 6223.4815818800. The cubic root of 38731723 is about 338.3417612715.

The spelling of 38731723 in words is "thirty-eight million, seven hundred thirty-one thousand, seven hundred twenty-three".