1988813375231 has 2 divisors, whose sum is σ = 1988813375232. Its totient is φ = 1988813375230.

The previous prime is 1988813375221. The next prime is 1988813375257. The reversal of 1988813375231 is 1325733188891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1988813375231 - 2³⁴ = 1971633506047 is a prime.

It is a super-2 number, since 2×1988813375231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988813375201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994406687615 + 994406687616.

It is an arithmetic number, because the mean of its divisors is an integer number (994406687616).

Almost surely, 2^{1988813375231} is an apocalyptic number.

1988813375231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988813375231 is an equidigital number, since it uses as much as digits as its factorization.

1988813375231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 59.

The spelling of 1988813375231 in words is "one trillion, nine hundred eighty-eight billion, eight hundred thirteen million, three hundred seventy-five thousand, two hundred thirty-one".