1311971324 has 6 divisors (see below), whose sum is σ = 2295949824. Its totient is φ = 655985660.

The previous prime is 1311971317. The next prime is 1311971329. The reversal of 1311971324 is 4231791131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311971329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163996412 + ... + 163996419.

It is an arithmetic number, because the mean of its divisors is an integer number (382658304).

Almost surely, 2^1311971324 is an apocalyptic number.

It is an amenable number.

1311971324 is a deficient number, since it is larger than the sum of its proper divisors (983978500).

1311971324 is a wasteful number, since it uses less digits than its factorization.

1311971324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327992835 (or 327992833 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 1311971324 is about 36221.1447085815. The cubic root of 1311971324 is about 1094.7327590923.

The spelling of 1311971324 in words is "one billion, three hundred eleven million, nine hundred seventy-one thousand, three hundred twenty-four".