1311551334 has 24 divisors (see below), whose sum is σ = 2881721232. Its totient is φ = 431025840.

The previous prime is 1311551327. The next prime is 1311551363. The reversal of 1311551334 is 4331551131.

It is a happy number.

1311551334 is a `hidden beast` number, since 1 + 3 + 115 + 513 + 34 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1311551298 and 1311551307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511849 + ... + 514404.

It is an arithmetic number, because the mean of its divisors is an integer number (120071718).

Almost surely, 2^1311551334 is an apocalyptic number.

1311551334 is an abundant number, since it is smaller than the sum of its proper divisors (1570169898).

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

1311551334 is a wasteful number, since it uses less digits than its factorization.

1311551334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026332 (or 1026329 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1311551334 is about 36215.3466640870. The cubic root of 1311551334 is about 1094.6159308575.

The spelling of 1311551334 in words is "one billion, three hundred eleven million, five hundred fifty-one thousand, three hundred thirty-four".