311311012123 has 8 divisors (see below), whose sum is σ = 322103134080. Its totient is φ = 300522707520.

The previous prime is 311311012049. The next prime is 311311012127. The reversal of 311311012123 is 321210113113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311311012123 - 2²¹ = 311308914971 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 311311012123.

It is not an unprimeable number, because it can be changed into a prime (311311012127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787915 + ... + 1115092.

It is an arithmetic number, because the mean of its divisors is an integer number (40262891760).

Almost surely, 2^311311012123 is an apocalyptic number.

311311012123 is a deficient number, since it is larger than the sum of its proper divisors (10792121957).

311311012123 is a wasteful number, since it uses less digits than its factorization.

311311012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908677.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 311311012123 its reverse (321210113113), we get a palindrome (632521125236).

The spelling of 311311012123 in words is "three hundred eleven billion, three hundred eleven million, twelve thousand, one hundred twenty-three".