12531233147 has 2 divisors, whose sum is σ = 12531233148. Its totient is φ = 12531233146.

The previous prime is 12531233119. The next prime is 12531233159. The reversal of 12531233147 is 74133213521.

It is a strong prime.

It is an emirp because it is prime and its reverse (74133213521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12531233147 - 2¹⁶ = 12531167611 is a prime.

It is not a weakly prime, because it can be changed into another prime (12531230147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265616573 + 6265616574.

It is an arithmetic number, because the mean of its divisors is an integer number (6265616574).

Almost surely, 2^12531233147 is an apocalyptic number.

12531233147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12531233147 is an equidigital number, since it uses as much as digits as its factorization.

12531233147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

Adding to 12531233147 its reverse (74133213521), we get a palindrome (86664446668).

The spelling of 12531233147 in words is "twelve billion, five hundred thirty-one million, two hundred thirty-three thousand, one hundred forty-seven".