1000201231 has 2 divisors, whose sum is σ = 1000201232. Its totient is φ = 1000201230.

The previous prime is 1000201229. The next prime is 1000201247. The reversal of 1000201231 is 1321020001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000201231 - 2¹ = 1000201229 is a prime.

It is a super-2 number, since 2×1000201231² = 2000805004987830722, which contains 22 as substring.

Together with 1000201229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000201291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500100615 + 500100616.

It is an arithmetic number, because the mean of its divisors is an integer number (500100616).

Almost surely, 2^1000201231 is an apocalyptic number.

1000201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000201231 is an equidigital number, since it uses as much as digits as its factorization.

1000201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1000201231 is about 31625.9581831128. The cubic root of 1000201231 is about 1000.0670725012.

Adding to 1000201231 its reverse (1321020001), we get a palindrome (2321221232).

The spelling of 1000201231 in words is "one billion, two hundred one thousand, two hundred thirty-one".