23031222311 has 4 divisors (see below), whose sum is σ = 24386000112. Its totient is φ = 21676444512.

The previous prime is 23031222287. The next prime is 23031222317. The reversal of 23031222311 is 11322213032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031222311 is a prime.

It is a super-2 number, since 2×23031222311² (a number of 22 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 (23031222317) 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, 677388875 + ... + 677388908.

It is an arithmetic number, because the mean of its divisors is an integer number (6096500028).

Almost surely, 2^23031222311 is an apocalyptic number.

23031222311 is a deficient number, since it is larger than the sum of its proper divisors (1354777801).

23031222311 is a wasteful number, since it uses less digits than its factorization.

23031222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354777800.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23031222311 its reverse (11322213032), we get a palindrome (34353435343).

The spelling of 23031222311 in words is "twenty-three billion, thirty-one million, two hundred twenty-two thousand, three hundred eleven".