38934221231 has 2 divisors, whose sum is σ = 38934221232. Its totient is φ = 38934221230.

The previous prime is 38934221173. The next prime is 38934221257. The reversal of 38934221231 is 13212243983.

It is a strong prime.

It is an emirp because it is prime and its reverse (13212243983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38934221231 is a prime.

It is a super-2 number, since 2×38934221231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38934221531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19467110615 + 19467110616.

It is an arithmetic number, because the mean of its divisors is an integer number (19467110616).

Almost surely, 2^38934221231 is an apocalyptic number.

38934221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38934221231 is an equidigital number, since it uses as much as digits as its factorization.

38934221231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The spelling of 38934221231 in words is "thirty-eight billion, nine hundred thirty-four million, two hundred twenty-one thousand, two hundred thirty-one".