311231011101023 has 4 divisors (see below), whose sum is σ = 335171858108808. Its totient is φ = 287290164093240.

The previous prime is 311231011101011. The next prime is 311231011101047. The reversal of 311231011101023 is 320101110132113.

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 311231011101023 - 2⁶ = 311231011100959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311231011100986 and 311231011101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311231011101053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970423503873 + ... + 11970423503898.

It is an arithmetic number, because the mean of its divisors is an integer number (83792964527202).

Almost surely, 2^{311231011101023} is an apocalyptic number.

311231011101023 is a deficient number, since it is larger than the sum of its proper divisors (23940847007785).

311231011101023 is a wasteful number, since it uses less digits than its factorization.

311231011101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23940847007784.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 311231011101023 its reverse (320101110132113), we get a palindrome (631332121233136).

The spelling of 311231011101023 in words is "three hundred eleven trillion, two hundred thirty-one billion, eleven million, one hundred one thousand, twenty-three".