200421312031 has 16 divisors (see below), whose sum is σ = 213377269248. Its totient is φ = 187595481600.

The previous prime is 200421312023. The next prime is 200421312037. The reversal of 200421312031 is 130213124002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200421312031 - 2³ = 200421312023 is a prime.

It is a super-2 number, since 2×200421312031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200421312037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20844181 + ... + 20853793.

It is an arithmetic number, because the mean of its divisors is an integer number (13336079328).

Almost surely, 2^200421312031 is an apocalyptic number.

200421312031 is a deficient number, since it is larger than the sum of its proper divisors (12955957217).

200421312031 is a wasteful number, since it uses less digits than its factorization.

200421312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16242.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 200421312031 its reverse (130213124002), we get a palindrome (330634436033).

The spelling of 200421312031 in words is "two hundred billion, four hundred twenty-one million, three hundred twelve thousand, thirty-one".