203122231310987 has 2 divisors, whose sum is σ = 203122231310988. Its totient is φ = 203122231310986.

The previous prime is 203122231310953. The next prime is 203122231311037. The reversal of 203122231310987 is 789013132221302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203122231310987 - 2⁸ = 203122231310731 is a prime.

It is not a weakly prime, because it can be changed into another prime (203122231310387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561115655493 + 101561115655494.

It is an arithmetic number, because the mean of its divisors is an integer number (101561115655494).

Almost surely, 2^{203122231310987} is an apocalyptic number.

203122231310987 is a deficient number, since it is larger than the sum of its proper divisors (1).

203122231310987 is an equidigital number, since it uses as much as digits as its factorization.

203122231310987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 203122231310987 in words is "two hundred three trillion, one hundred twenty-two billion, two hundred thirty-one million, three hundred ten thousand, nine hundred eighty-seven".