231403244311 has 2 divisors, whose sum is σ = 231403244312. Its totient is φ = 231403244310.

The previous prime is 231403244291. The next prime is 231403244383. The reversal of 231403244311 is 113442304132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231403244311 - 2¹⁷ = 231403113239 is a prime.

It is a super-2 number, since 2×231403244311² (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 231403244311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231403844311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115701622155 + 115701622156.

It is an arithmetic number, because the mean of its divisors is an integer number (115701622156).

Almost surely, 2^231403244311 is an apocalyptic number.

231403244311 is a deficient number, since it is larger than the sum of its proper divisors (1).

231403244311 is an equidigital number, since it uses as much as digits as its factorization.

231403244311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 231403244311 its reverse (113442304132), we get a palindrome (344845548443).

The spelling of 231403244311 in words is "two hundred thirty-one billion, four hundred three million, two hundred forty-four thousand, three hundred eleven".