1311940 has 24 divisors (see below), whose sum is σ = 3148992. Its totient is φ = 449760.

The previous prime is 1311923. The next prime is 1311967. The reversal of 1311940 is 491131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4546 + ... + 4825.

It is an arithmetic number, because the mean of its divisors is an integer number (131208).

2^1311940 is an apocalyptic number.

1311940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311940 is an abundant number, since it is smaller than the sum of its proper divisors (1837052).

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

1311940 is a wasteful number, since it uses less digits than its factorization.

1311940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387 (or 9385 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1311940 is about 1145.3994936266. The cubic root of 1311940 is about 109.4724046584.

The spelling of 1311940 in words is "one million, three hundred eleven thousand, nine hundred forty".