20231321310311 has 4 divisors (see below), whose sum is σ = 20231335861632. Its totient is φ = 20231306758992.

The previous prime is 20231321310287. The next prime is 20231321310359. The reversal of 20231321310311 is 11301312313202.

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 20231321310311 - 2⁶ = 20231321310247 is a prime.

It is a super-2 number, since 2×20231321310311² (a number of 27 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 (20231321310391) 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, 4940270 + ... + 8054123.

It is an arithmetic number, because the mean of its divisors is an integer number (5057833965408).

Almost surely, 2^{20231321310311} is an apocalyptic number.

20231321310311 is a deficient number, since it is larger than the sum of its proper divisors (14551321).

20231321310311 is a wasteful number, since it uses less digits than its factorization.

20231321310311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14551320.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20231321310311 its reverse (11301312313202), we get a palindrome (31532633623513).

The spelling of 20231321310311 in words is "twenty trillion, two hundred thirty-one billion, three hundred twenty-one million, three hundred ten thousand, three hundred eleven".