147744197231 has 2 divisors, whose sum is σ = 147744197232. Its totient is φ = 147744197230.

The previous prime is 147744197219. The next prime is 147744197317. The reversal of 147744197231 is 132791447741.

It is a weak prime.

It is an emirp because it is prime and its reverse (132791447741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147744197231 is a prime.

It is a super-2 number, since 2×147744197231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 147744197231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147744197831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73872098615 + 73872098616.

It is an arithmetic number, because the mean of its divisors is an integer number (73872098616).

Almost surely, 2^147744197231 is an apocalyptic number.

147744197231 is a deficient number, since it is larger than the sum of its proper divisors (1).

147744197231 is an equidigital number, since it uses as much as digits as its factorization.

147744197231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The spelling of 147744197231 in words is "one hundred forty-seven billion, seven hundred forty-four million, one hundred ninety-seven thousand, two hundred thirty-one".