19131241 has 2 divisors, whose sum is σ = 19131242. Its totient is φ = 19131240.

The previous prime is 19131227. The next prime is 19131269. The reversal of 19131241 is 14213191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19105641 + 25600 = 4371^2 + 160^2 .

It is an emirp because it is prime and its reverse (14213191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19131241 - 2¹⁹ = 18606953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19131221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9565620 + 9565621.

It is an arithmetic number, because the mean of its divisors is an integer number (9565621).

Almost surely, 2^19131241 is an apocalyptic number.

It is an amenable number.

19131241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19131241 is an equidigital number, since it uses as much as digits as its factorization.

19131241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 19131241 is about 4373.9274113776. The cubic root of 19131241 is about 267.4531481109.

The spelling of 19131241 in words is "nineteen million, one hundred thirty-one thousand, two hundred forty-one".