1131312341 has 4 divisors (see below), whose sum is σ = 1133580000. Its totient is φ = 1129044684.

The previous prime is 1131312323. The next prime is 1131312349. The reversal of 1131312341 is 1432131311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131312341 - 2²⁶ = 1064203477 is a prime.

It is a super-2 number, since 2×1131312341² = 2559735225797800562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131312349) 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 in 3 ways as a sum of consecutive naturals, for example, 1133081 + ... + 1134078.

It is an arithmetic number, because the mean of its divisors is an integer number (283395000).

Almost surely, 2^1131312341 is an apocalyptic number.

It is an amenable number.

1131312341 is a deficient number, since it is larger than the sum of its proper divisors (2267659).

1131312341 is an equidigital number, since it uses as much as digits as its factorization.

1131312341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267658.

The product of its digits is 216, while the sum is 20.

The square root of 1131312341 is about 33634.9868589241. The cubic root of 1131312341 is about 1041.9834992223.

Adding to 1131312341 its reverse (1432131311), we get a palindrome (2563443652).

The spelling of 1131312341 in words is "one billion, one hundred thirty-one million, three hundred twelve thousand, three hundred forty-one".