1311455442 has 32 divisors (see below), whose sum is σ = 2866316544. Its totient is φ = 396722000.

The previous prime is 1311455419. The next prime is 1311455443. The reversal of 1311455442 is 2445541131.

It is not an unprimeable number, because it can be changed into a prime (1311455443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21817 + ... + 55667.

It is an arithmetic number, because the mean of its divisors is an integer number (89572392).

Almost surely, 2^1311455442 is an apocalyptic number.

1311455442 is an abundant number, since it is smaller than the sum of its proper divisors (1554861102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311455442 is a wasteful number, since it uses less digits than its factorization.

1311455442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34454.

The product of its digits is 9600, while the sum is 30.

The square root of 1311455442 is about 36214.0227260104. The cubic root of 1311455442 is about 1094.5892531702.

Adding to 1311455442 its reverse (2445541131), we get a palindrome (3756996573).

The spelling of 1311455442 in words is "one billion, three hundred eleven million, four hundred fifty-five thousand, four hundred forty-two".