1340311131 has 40 divisors (see below), whose sum is σ = 2094306720. Its totient is φ = 852622848.

The previous prime is 1340311121. The next prime is 1340311153. The reversal of 1340311131 is 1311130431.

1340311131 is a `hidden beast` number, since 1 + 340 + 311 + 13 + 1 = 666.

It is not a de Polignac number, because 1340311131 - 2⁷ = 1340311003 is a prime.

It is a super-2 number, since 2×1340311131² = 3592867855764998322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340311121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1253265 + ... + 1254333.

It is an arithmetic number, because the mean of its divisors is an integer number (52357668).

Almost surely, 2^1340311131 is an apocalyptic number.

1340311131 is a deficient number, since it is larger than the sum of its proper divisors (753995589).

1340311131 is a wasteful number, since it uses less digits than its factorization.

1340311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1340311131 is about 36610.2599144010. The cubic root of 1340311131 is about 1102.5590916544.

Adding to 1340311131 its reverse (1311130431), we get a palindrome (2651441562).

The spelling of 1340311131 in words is "one billion, three hundred forty million, three hundred eleven thousand, one hundred thirty-one".