1231182413 has 2 divisors, whose sum is σ = 1231182414. Its totient is φ = 1231182412.

The previous prime is 1231182383. The next prime is 1231182439. The reversal of 1231182413 is 3142811321.

It is an a-pointer prime, because the next prime (1231182439) can be obtained adding 1231182413 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050602569 + 180579844 = 32413^2 + 13438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231182413 - 2¹⁰ = 1231181389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231182473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615591206 + 615591207.

It is an arithmetic number, because the mean of its divisors is an integer number (615591207).

Almost surely, 2^1231182413 is an apocalyptic number.

It is an amenable number.

1231182413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231182413 is an equidigital number, since it uses as much as digits as its factorization.

1231182413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 1231182413 is about 35088.2090309551. The cubic root of 1231182413 is about 1071.7844892966.

Adding to 1231182413 its reverse (3142811321), we get a palindrome (4373993734).

The spelling of 1231182413 in words is "one billion, two hundred thirty-one million, one hundred eighty-two thousand, four hundred thirteen".