1231113119 has 2 divisors, whose sum is σ = 1231113120. Its totient is φ = 1231113118.

The previous prime is 1231113061. The next prime is 1231113209. The reversal of 1231113119 is 9113111321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9113111321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231113119 - 2²⁰ = 1230064543 is a prime.

It is a super-2 number, since 2×1231113119² = 3031279023547816322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231113094 and 1231113103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231110119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615556559 + 615556560.

It is an arithmetic number, because the mean of its divisors is an integer number (615556560).

Almost surely, 2^1231113119 is an apocalyptic number.

1231113119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231113119 is an equidigital number, since it uses as much as digits as its factorization.

1231113119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 23.

The square root of 1231113119 is about 35087.2215913429. The cubic root of 1231113119 is about 1071.7643813561.

The spelling of 1231113119 in words is "one billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred nineteen".