231313122151 has 2 divisors, whose sum is σ = 231313122152. Its totient is φ = 231313122150.

The previous prime is 231313122113. The next prime is 231313122193. The reversal of 231313122151 is 151221313132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231313122151 - 2²¹ = 231311024999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231313120151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656561075 + 115656561076.

It is an arithmetic number, because the mean of its divisors is an integer number (115656561076).

Almost surely, 2^231313122151 is an apocalyptic number.

231313122151 is a deficient number, since it is larger than the sum of its proper divisors (1).

231313122151 is an equidigital number, since it uses as much as digits as its factorization.

231313122151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

Adding to 231313122151 its reverse (151221313132), we get a palindrome (382534435283).

The spelling of 231313122151 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twenty-two thousand, one hundred fifty-one".