203110129997 has 2 divisors, whose sum is σ = 203110129998. Its totient is φ = 203110129996.

The previous prime is 203110129993. The next prime is 203110130029. The reversal of 203110129997 is 799921011302.

203110129997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188889328996 + 14220801001 = 434614^2 + 119251^2 .

It is a cyclic number.

It is not a de Polignac number, because 203110129997 - 2² = 203110129993 is a prime.

It is a super-4 number, since 4×203110129997⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203110129993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101555064998 + 101555064999.

It is an arithmetic number, because the mean of its divisors is an integer number (101555064999).

Almost surely, 2^203110129997 is an apocalyptic number.

It is an amenable number.

203110129997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203110129997 is an equidigital number, since it uses as much as digits as its factorization.

203110129997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 44.

The spelling of 203110129997 in words is "two hundred three billion, one hundred ten million, one hundred twenty-nine thousand, nine hundred ninety-seven".