311311121023 has 8 divisors (see below), whose sum is σ = 356775183360. Its totient is φ = 266094819960.

The previous prime is 311311120999. The next prime is 311311121039. The reversal of 311311121023 is 320121113113.

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 311311121023 - 2²¹ = 311309023871 is a prime.

It is a super-2 number, since 2×311311121023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311311121083) 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, 61937623 + ... + 61942648.

It is an arithmetic number, because the mean of its divisors is an integer number (44596897920).

Almost surely, 2^311311121023 is an apocalyptic number.

311311121023 is a deficient number, since it is larger than the sum of its proper divisors (45464062337).

311311121023 is a wasteful number, since it uses less digits than its factorization.

311311121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123880637.

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

Adding to 311311121023 its reverse (320121113113), we get a palindrome (631432234136).

The spelling of 311311121023 in words is "three hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, twenty-three".