1311442404 has 24 divisors (see below), whose sum is σ = 3060775200. Its totient is φ = 437041344.

The previous prime is 1311442387. The next prime is 1311442409. The reversal of 1311442404 is 4042441131.

It is not an unprimeable number, because it can be changed into a prime (1311442409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50472 + ... + 71904.

It is an arithmetic number, because the mean of its divisors is an integer number (127532300).

Almost surely, 2^1311442404 is an apocalyptic number.

It is an amenable number.

1311442404 is an abundant number, since it is smaller than the sum of its proper divisors (1749332796).

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

1311442404 is a wasteful number, since it uses less digits than its factorization.

1311442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26539 (or 26537 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1311442404 is about 36213.8427124214. The cubic root of 1311442404 is about 1094.5856258257.

Adding to 1311442404 its reverse (4042441131), we get a palindrome (5353883535).

The spelling of 1311442404 in words is "one billion, three hundred eleven million, four hundred forty-two thousand, four hundred four".