1311577134 has 32 divisors (see below), whose sum is σ = 2999512320. Its totient is φ = 374533632.

The previous prime is 1311577129. The next prime is 1311577151. The reversal of 1311577134 is 4317751131.

It is a junction number, because it is equal to n+sod(n) for n = 1311577095 and 1311577104.

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, 81357 + ... + 96135.

It is an arithmetic number, because the mean of its divisors is an integer number (93734760).

Almost surely, 2^1311577134 is an apocalyptic number.

1311577134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311577134 is an abundant number, since it is smaller than the sum of its proper divisors (1687935186).

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

1311577134 is a wasteful number, since it uses less digits than its factorization.

1311577134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16904.

The product of its digits is 8820, while the sum is 33.

The square root of 1311577134 is about 36215.7028649176. The cubic root of 1311577134 is about 1094.6231083389.

The spelling of 1311577134 in words is "one billion, three hundred eleven million, five hundred seventy-seven thousand, one hundred thirty-four".