1808723247131 has 2 divisors, whose sum is σ = 1808723247132. Its totient is φ = 1808723247130.

The previous prime is 1808723247127. The next prime is 1808723247217. The reversal of 1808723247131 is 1317423278081.

It is a weak prime.

It is an emirp because it is prime and its reverse (1317423278081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1808723247131 - 2² = 1808723247127 is a prime.

It is a super-2 number, since 2×1808723247131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1808723247101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904361623565 + 904361623566.

It is an arithmetic number, because the mean of its divisors is an integer number (904361623566).

Almost surely, 2^{1808723247131} is an apocalyptic number.

1808723247131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808723247131 is an equidigital number, since it uses as much as digits as its factorization.

1808723247131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 1808723247131 in words is "one trillion, eight hundred eight billion, seven hundred twenty-three million, two hundred forty-seven thousand, one hundred thirty-one".