1320312877 has 16 divisors (see below), whose sum is σ = 1437865408. Its totient is φ = 1205124480.

The previous prime is 1320312857. The next prime is 1320312883. The reversal of 1320312877 is 7782130231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1320312877 - 2²³ = 1311924269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320312857) 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, 445633 + ... + 448585.

It is an arithmetic number, because the mean of its divisors is an integer number (89866588).

Almost surely, 2^1320312877 is an apocalyptic number.

It is an amenable number.

1320312877 is a deficient number, since it is larger than the sum of its proper divisors (117552531).

1320312877 is a wasteful number, since it uses less digits than its factorization.

1320312877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1320312877 is about 36336.1098220489. The cubic root of 1320312877 is about 1097.0479738326.

The spelling of 1320312877 in words is "one billion, three hundred twenty million, three hundred twelve thousand, eight hundred seventy-seven".