1236230131 has 2 divisors, whose sum is σ = 1236230132. Its totient is φ = 1236230130.

The previous prime is 1236230113. The next prime is 1236230153. The reversal of 1236230131 is 1310326321.

Together with previous prime (1236230113) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (1236230153) can be obtained adding 1236230131 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1236230131 - 2⁹ = 1236229619 is a prime.

It is a super-2 number, since 2×1236230131² = 3056529873584554322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1236230111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618115065 + 618115066.

It is an arithmetic number, because the mean of its divisors is an integer number (618115066).

Almost surely, 2^1236230131 is an apocalyptic number.

1236230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236230131 is an equidigital number, since it uses as much as digits as its factorization.

1236230131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1236230131 is about 35160.0644339569. The cubic root of 1236230131 is about 1073.2472265346.

Adding to 1236230131 its reverse (1310326321), we get a palindrome (2546556452).

The spelling of 1236230131 in words is "one billion, two hundred thirty-six million, two hundred thirty thousand, one hundred thirty-one".