1020200231 has 4 divisors (see below), whose sum is σ = 1073895000. Its totient is φ = 966505464.

The previous prime is 1020200221. The next prime is 1020200239. The reversal of 1020200231 is 1320020201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020200231 - 2¹⁴ = 1020183847 is a prime.

It is a super-2 number, since 2×1020200231² = 2081617022664906722, which 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 (1020200239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26847356 + ... + 26847393.

It is an arithmetic number, because the mean of its divisors is an integer number (268473750).

Almost surely, 2^1020200231 is an apocalyptic number.

1020200231 is a deficient number, since it is larger than the sum of its proper divisors (53694769).

1020200231 is an equidigital number, since it uses as much as digits as its factorization.

1020200231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53694768.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1020200231 is about 31940.5734294173. The cubic root of 1020200231 is about 1006.6885735746.

Adding to 1020200231 its reverse (1320020201), we get a palindrome (2340220432).

The spelling of 1020200231 in words is "one billion, twenty million, two hundred thousand, two hundred thirty-one".