10203420031087 has 2 divisors, whose sum is σ = 10203420031088. Its totient is φ = 10203420031086.

The previous prime is 10203420031009. The next prime is 10203420031127. The reversal of 10203420031087 is 78013002430201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10203420031087 - 2¹⁵ = 10203419998319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203420031787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101710015543 + 5101710015544.

It is an arithmetic number, because the mean of its divisors is an integer number (5101710015544).

Almost surely, 2^{10203420031087} is an apocalyptic number.

10203420031087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203420031087 is an equidigital number, since it uses as much as digits as its factorization.

10203420031087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 10203420031087 its reverse (78013002430201), we get a palindrome (88216422461288).

The spelling of 10203420031087 in words is "ten trillion, two hundred three billion, four hundred twenty million, thirty-one thousand, eighty-seven".