1213131163 has 2 divisors, whose sum is σ = 1213131164. Its totient is φ = 1213131162.

The previous prime is 1213131137. The next prime is 1213131167. The reversal of 1213131163 is 3611313121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213131163 - 2¹⁷ = 1213000091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213131167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606565581 + 606565582.

It is an arithmetic number, because the mean of its divisors is an integer number (606565582).

Almost surely, 2^1213131163 is an apocalyptic number.

1213131163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213131163 is an equidigital number, since it uses as much as digits as its factorization.

1213131163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 22.

The square root of 1213131163 is about 34830.0324863472. The cubic root of 1213131163 is about 1066.5206115233.

Adding to 1213131163 its reverse (3611313121), we get a palindrome (4824444284).

The spelling of 1213131163 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred sixty-three".