1230151231 has 2 divisors, whose sum is σ = 1230151232. Its totient is φ = 1230151230.

The previous prime is 1230151201. The next prime is 1230151243. The reversal of 1230151231 is 1321510321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230151231 - 2⁵ = 1230151199 is a prime.

It is a super-2 number, since 2×1230151231² = 3026544102261630722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230151199 and 1230151208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230151201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615075615 + 615075616.

It is an arithmetic number, because the mean of its divisors is an integer number (615075616).

Almost surely, 2^1230151231 is an apocalyptic number.

1230151231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230151231 is an equidigital number, since it uses as much as digits as its factorization.

1230151231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1230151231 is about 35073.5118144733. The cubic root of 1230151231 is about 1071.4851798518.

Adding to 1230151231 its reverse (1321510321), we get a palindrome (2551661552).

The spelling of 1230151231 in words is "one billion, two hundred thirty million, one hundred fifty-one thousand, two hundred thirty-one".