231001031011 has 2 divisors, whose sum is σ = 231001031012. Its totient is φ = 231001031010.

The previous prime is 231001030993. The next prime is 231001031017. The reversal of 231001031011 is 110130100132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231001031011 - 2¹⁵ = 231000998243 is a prime.

It is a super-2 number, since 2×231001031011² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231001030982 and 231001031000.

It is not a weakly prime, because it can be changed into another prime (231001031017) 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 as a sum of consecutive naturals, namely, 115500515505 + 115500515506.

It is an arithmetic number, because the mean of its divisors is an integer number (115500515506).

Almost surely, 2^231001031011 is an apocalyptic number.

231001031011 is a deficient number, since it is larger than the sum of its proper divisors (1).

231001031011 is an equidigital number, since it uses as much as digits as its factorization.

231001031011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 231001031011 its reverse (110130100132), we get a palindrome (341131131143).

The spelling of 231001031011 in words is "two hundred thirty-one billion, one million, thirty-one thousand, eleven".