1311244323004 has 48 divisors (see below), whose sum is σ = 2861324395776. Its totient is φ = 510798038400.

The previous prime is 1311244322963. The next prime is 1311244323013. The reversal of 1311244323004 is 4003234421131.

It is a happy number.

It is a super-2 number, since 2×1311244323004² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767547 + ... + 2397229.

It is an arithmetic number, because the mean of its divisors is an integer number (59610924912).

Almost surely, 2^{1311244323004} is an apocalyptic number.

1311244323004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311244323004 is an abundant number, since it is smaller than the sum of its proper divisors (1550080072772).

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

1311244323004 is a wasteful number, since it uses less digits than its factorization.

1311244323004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636466 (or 636464 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1311244323004 its reverse (4003234421131), we get a palindrome (5314478744135).

The spelling of 1311244323004 in words is "one trillion, three hundred eleven billion, two hundred forty-four million, three hundred twenty-three thousand, four".