142323531630991 has 2 divisors, whose sum is σ = 142323531630992. Its totient is φ = 142323531630990.

The previous prime is 142323531630961. The next prime is 142323531631031. The reversal of 142323531630991 is 199036135323241.

It is a weak prime.

It is an emirp because it is prime and its reverse (199036135323241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142323531630991 - 2²¹ = 142323529533839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142323531630941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71161765815495 + 71161765815496.

It is an arithmetic number, because the mean of its divisors is an integer number (71161765815496).

Almost surely, 2^{142323531630991} is an apocalyptic number.

142323531630991 is a deficient number, since it is larger than the sum of its proper divisors (1).

142323531630991 is an equidigital number, since it uses as much as digits as its factorization.

142323531630991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 142323531630991 in words is "one hundred forty-two trillion, three hundred twenty-three billion, five hundred thirty-one million, six hundred thirty thousand, nine hundred ninety-one".