231301331147 has 2 divisors, whose sum is σ = 231301331148. Its totient is φ = 231301331146.

The previous prime is 231301331113. The next prime is 231301331207. The reversal of 231301331147 is 741133103132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231301331147 - 2¹⁴ = 231301314763 is a prime.

It is not a weakly prime, because it can be changed into another prime (231301333147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650665573 + 115650665574.

It is an arithmetic number, because the mean of its divisors is an integer number (115650665574).

Almost surely, 2^231301331147 is an apocalyptic number.

231301331147 is a deficient number, since it is larger than the sum of its proper divisors (1).

231301331147 is an equidigital number, since it uses as much as digits as its factorization.

231301331147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 231301331147 its reverse (741133103132), we get a palindrome (972434434279).

The spelling of 231301331147 in words is "two hundred thirty-one billion, three hundred one million, three hundred thirty-one thousand, one hundred forty-seven".