311663261363 has 4 divisors (see below), whose sum is σ = 325213837968. Its totient is φ = 298112684760.

The previous prime is 311663261339. The next prime is 311663261369. The reversal of 311663261363 is 363162366113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311663261363 - 2¹⁰ = 311663260339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311663261363.

It is not an unprimeable number, because it can be changed into a prime (311663261369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6775288268 + ... + 6775288313.

It is an arithmetic number, because the mean of its divisors is an integer number (81303459492).

Almost surely, 2^311663261363 is an apocalyptic number.

311663261363 is a deficient number, since it is larger than the sum of its proper divisors (13550576605).

311663261363 is a wasteful number, since it uses less digits than its factorization.

311663261363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13550576604.

The product of its digits is 209952, while the sum is 41.

The spelling of 311663261363 in words is "three hundred eleven billion, six hundred sixty-three million, two hundred sixty-one thousand, three hundred sixty-three".