204021031001 has 8 divisors (see below), whose sum is σ = 204167517960. Its totient is φ = 203874599808.

The previous prime is 204021030991. The next prime is 204021031037. The reversal of 204021031001 is 100130120402.

It can be written as a sum of positive squares in 4 ways, for example, as 12667277401 + 191353753600 = 112549^2 + 437440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204021031001 is a prime.

It is a super-2 number, since 2×204021031001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204021031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9471095 + ... + 9492611.

It is an arithmetic number, because the mean of its divisors is an integer number (25520939745).

Almost surely, 2^204021031001 is an apocalyptic number.

It is an amenable number.

204021031001 is a deficient number, since it is larger than the sum of its proper divisors (146486959).

204021031001 is a wasteful number, since it uses less digits than its factorization.

204021031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27883.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 204021031001 its reverse (100130120402), we get a palindrome (304151151403).

The spelling of 204021031001 in words is "two hundred four billion, twenty-one million, thirty-one thousand, one".