1311110040 has 64 divisors (see below), whose sum is σ = 4164708960. Its totient is φ = 329062400.

The previous prime is 1311110011. The next prime is 1311110041. The reversal of 1311110040 is 400111131.

1311110040 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1311109998 and 1311110025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311110041) 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, 319311 + ... + 323390.

Almost surely, 2^1311110040 is an apocalyptic number.

1311110040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311110040 is an abundant number, since it is smaller than the sum of its proper divisors (2853598920).

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

1311110040 is a wasteful number, since it uses less digits than its factorization.

1311110040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642732 (or 642728 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1311110040 is about 36209.2535134322. The cubic root of 1311110040 is about 1094.4931496348.

Adding to 1311110040 its reverse (400111131), we get a palindrome (1711221171).

The spelling of 1311110040 in words is "one billion, three hundred eleven million, one hundred ten thousand, forty".