1311123442 has 8 divisors (see below), whose sum is σ = 1966864896. Its totient is φ = 655501812.

The previous prime is 1311123431. The next prime is 1311123479. The reversal of 1311123442 is 2443211131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6063 + ... + 51565.

It is an arithmetic number, because the mean of its divisors is an integer number (245858112).

Almost surely, 2^1311123442 is an apocalyptic number.

1311123442 is a deficient number, since it is larger than the sum of its proper divisors (655741454).

1311123442 is a wasteful number, since it uses less digits than its factorization.

1311123442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59912.

The product of its digits is 576, while the sum is 22.

The square root of 1311123442 is about 36209.4385761503. The cubic root of 1311123442 is about 1094.4968788787.

Adding to 1311123442 its reverse (2443211131), we get a palindrome (3754334573).

The spelling of 1311123442 in words is "one billion, three hundred eleven million, one hundred twenty-three thousand, four hundred forty-two".