231241140227 has 2 divisors, whose sum is σ = 231241140228. Its totient is φ = 231241140226.

The previous prime is 231241140223. The next prime is 231241140233. The reversal of 231241140227 is 722041142132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231241140227 - 2² = 231241140223 is a prime.

It is a super-2 number, since 2×231241140227² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231241140227.

It is not a weakly prime, because it can be changed into another prime (231241140223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620570113 + 115620570114.

It is an arithmetic number, because the mean of its divisors is an integer number (115620570114).

Almost surely, 2^231241140227 is an apocalyptic number.

231241140227 is a deficient number, since it is larger than the sum of its proper divisors (1).

231241140227 is an equidigital number, since it uses as much as digits as its factorization.

231241140227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 231241140227 its reverse (722041142132), we get a palindrome (953282282359).

The spelling of 231241140227 in words is "two hundred thirty-one billion, two hundred forty-one million, one hundred forty thousand, two hundred twenty-seven".