231011103031 has 2 divisors, whose sum is σ = 231011103032. Its totient is φ = 231011103030.

The previous prime is 231011103013. The next prime is 231011103073. The reversal of 231011103031 is 130301110132.

Together with previous prime (231011103013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231011103031 - 2¹⁵ = 231011070263 is a prime.

It is a super-2 number, since 2×231011103031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231011102996 and 231011103014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231011103131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115505551515 + 115505551516.

It is an arithmetic number, because the mean of its divisors is an integer number (115505551516).

Almost surely, 2^231011103031 is an apocalyptic number.

231011103031 is a deficient number, since it is larger than the sum of its proper divisors (1).

231011103031 is an equidigital number, since it uses as much as digits as its factorization.

231011103031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 231011103031 its reverse (130301110132), we get a palindrome (361312213163).

The spelling of 231011103031 in words is "two hundred thirty-one billion, eleven million, one hundred three thousand, thirty-one".