23311031311 has 8 divisors (see below), whose sum is σ = 23466815504. Its totient is φ = 23155735680.

The previous prime is 23311031309. The next prime is 23311031351. The reversal of 23311031311 is 11313011332.

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 23311031311 - 2¹ = 23311031309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311031351) 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, 26145 + ... + 217498.

It is an arithmetic number, because the mean of its divisors is an integer number (2933351938).

Almost surely, 2^23311031311 is an apocalyptic number.

23311031311 is a deficient number, since it is larger than the sum of its proper divisors (155784193).

23311031311 is a wasteful number, since it uses less digits than its factorization.

23311031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244281.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 23311031311 its reverse (11313011332), we get a palindrome (34624042643).

The spelling of 23311031311 in words is "twenty-three billion, three hundred eleven million, thirty-one thousand, three hundred eleven".