1311400248 has 16 divisors (see below), whose sum is σ = 3278500680. Its totient is φ = 437133408.

The previous prime is 1311400219. The next prime is 1311400267. The reversal of 1311400248 is 8420041131.

It is a super-2 number, since 2×1311400248² = 3439541220908923008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 54641677 = 1311400248 / (1 + 3 + 1 + 1 + 4 + 0 + 0 + 2 + 4 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27320815 + ... + 27320862.

Almost surely, 2^1311400248 is an apocalyptic number.

It is an amenable number.

1311400248 is an abundant number, since it is smaller than the sum of its proper divisors (1967100432).

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

1311400248 is a wasteful number, since it uses less digits than its factorization.

1311400248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54641686 (or 54641682 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1311400248 is about 36213.2606651210. The cubic root of 1311400248 is about 1094.5738973030.

Adding to 1311400248 its reverse (8420041131), we get a palindrome (9731441379).

The spelling of 1311400248 in words is "one billion, three hundred eleven million, four hundred thousand, two hundred forty-eight".