203480129 has 2 divisors, whose sum is σ = 203480130. Its totient is φ = 203480128.

The previous prime is 203480111. The next prime is 203480159. The reversal of 203480129 is 921084302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152571904 + 50908225 = 12352^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 203480129 - 2¹⁶ = 203414593 is a prime.

It is not a weakly prime, because it can be changed into another prime (203480159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101740064 + 101740065.

It is an arithmetic number, because the mean of its divisors is an integer number (101740065).

Almost surely, 2^203480129 is an apocalyptic number.

It is an amenable number.

203480129 is a deficient number, since it is larger than the sum of its proper divisors (1).

203480129 is an equidigital number, since it uses as much as digits as its factorization.

203480129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 203480129 is about 14264.6461224946. The cubic root of 203480129 is about 588.1760477147.

The spelling of 203480129 in words is "two hundred three million, four hundred eighty thousand, one hundred twenty-nine".