1311830835 has 16 divisors (see below), whose sum is σ = 2398776576. Its totient is φ = 599694048.

The previous prime is 1311830831. The next prime is 1311830837. The reversal of 1311830835 is 5380381131.

It is not a de Polignac number, because 1311830835 - 2² = 1311830831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311830796 and 1311830805.

It is not an unprimeable number, because it can be changed into a prime (1311830831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6246709 + ... + 6246918.

It is an arithmetic number, because the mean of its divisors is an integer number (149923536).

Almost surely, 2^1311830835 is an apocalyptic number.

1311830835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311830835 is a deficient number, since it is larger than the sum of its proper divisors (1086945741).

1311830835 is a wasteful number, since it uses less digits than its factorization.

1311830835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493642.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1311830835 is about 36219.2053336348. The cubic root of 1311830835 is about 1094.6936821710.

The spelling of 1311830835 in words is "one billion, three hundred eleven million, eight hundred thirty thousand, eight hundred thirty-five".