311123013002 has 12 divisors (see below), whose sum is σ = 495751376310. Its totient is φ = 146410829376.

The previous prime is 311123012927. The next prime is 311123013017. The reversal of 311123013002 is 200310321113.

It can be written as a sum of positive squares in 3 ways, for example, as 305431970281 + 5691042721 = 552659^2 + 75439^2 .

It is a super-2 number, since 2×311123013002² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269136977 + ... + 269138132.

Almost surely, 2^311123013002 is an apocalyptic number.

311123013002 is a deficient number, since it is larger than the sum of its proper divisors (184628363308).

311123013002 is a wasteful number, since it uses less digits than its factorization.

311123013002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538275145 (or 538275128 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 311123013002 its reverse (200310321113), we get a palindrome (511433334115).

The spelling of 311123013002 in words is "three hundred eleven billion, one hundred twenty-three million, thirteen thousand, two".