1311964 has 12 divisors (see below), whose sum is σ = 2304288. Its totient is φ = 653600.

The previous prime is 1311923. The next prime is 1311967. The reversal of 1311964 is 4691131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1344 + ... + 2104.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

2^1311964 is an apocalyptic number.

It is an amenable number.

1311964 is a deficient number, since it is larger than the sum of its proper divisors (992324).

1311964 is a wasteful number, since it uses less digits than its factorization.

1311964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1194 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 1311964 is about 1145.4099702727. The cubic root of 1311964 is about 109.4730721996.

The spelling of 1311964 in words is "one million, three hundred eleven thousand, nine hundred sixty-four".