231000201131 has 6 divisors (see below), whose sum is σ = 268714519740. Its totient is φ = 198000172356.

The previous prime is 231000201109. The next prime is 231000201149. The reversal of 231000201131 is 131102000132.

It is not a de Polignac number, because 231000201131 - 2¹⁰ = 231000200107 is a prime.

It is a super-2 number, since 2×231000201131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231000201331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357144861 + ... + 2357144958.

It is an arithmetic number, because the mean of its divisors is an integer number (44785753290).

Almost surely, 2^231000201131 is an apocalyptic number.

231000201131 is a deficient number, since it is larger than the sum of its proper divisors (37714318609).

231000201131 is an equidigital number, since it uses as much as digits as its factorization.

231000201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714289833 (or 4714289826 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 231000201131 its reverse (131102000132), we get a palindrome (362102201263).

The spelling of 231000201131 in words is "two hundred thirty-one billion, two hundred one thousand, one hundred thirty-one".