203129690 has 16 divisors (see below), whose sum is σ = 366474240. Its totient is φ = 81065040.

The previous prime is 203129683. The next prime is 203129789. The reversal of 203129690 is 96921302.

It is a super-3 number, since 3×203129690³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18746 + ... + 27525.

It is an arithmetic number, because the mean of its divisors is an integer number (22904640).

Almost surely, 2^203129690 is an apocalyptic number.

203129690 is a deficient number, since it is larger than the sum of its proper divisors (163344550).

203129690 is a wasteful number, since it uses less digits than its factorization.

203129690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46717.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 203129690 is about 14252.3573488739. The cubic root of 203129690 is about 587.8381961045.

The spelling of 203129690 in words is "two hundred three million, one hundred twenty-nine thousand, six hundred ninety".