1311019424 has 48 divisors (see below), whose sum is σ = 3032316000. Its totient is φ = 550076160.

The previous prime is 1311019421. The next prime is 1311019429. The reversal of 1311019424 is 4249101131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1311019393 and 1311019402.

It is not an unprimeable number, because it can be changed into a prime (1311019421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138674 + ... + 147825.

It is an arithmetic number, because the mean of its divisors is an integer number (63173250).

Almost surely, 2^1311019424 is an apocalyptic number.

It is an amenable number.

1311019424 is an abundant number, since it is smaller than the sum of its proper divisors (1721296576).

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

1311019424 is a wasteful number, since it uses less digits than its factorization.

1311019424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286533 (or 286525 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1311019424 is about 36208.0022094564. The cubic root of 1311019424 is about 1094.4679341372.

The spelling of 1311019424 in words is "one billion, three hundred eleven million, nineteen thousand, four hundred twenty-four".