20231313102021 has 16 divisors (see below), whose sum is σ = 31823140732928. Its totient is φ = 11187822913200.

The previous prime is 20231313101983. The next prime is 20231313102053. The reversal of 20231313102021 is 12020131313202.

It is not a de Polignac number, because 20231313102021 - 2⁶ = 20231313101957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231317102021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15538642285 + ... + 15538643586.

It is an arithmetic number, because the mean of its divisors is an integer number (1988946295808).

Almost surely, 2^{20231313102021} is an apocalyptic number.

20231313102021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20231313102021 is a deficient number, since it is larger than the sum of its proper divisors (11591827630907).

20231313102021 is a wasteful number, since it uses less digits than its factorization.

20231313102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31077285912.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20231313102021 its reverse (12020131313202), we get a palindrome (32251444415223).

The spelling of 20231313102021 in words is "twenty trillion, two hundred thirty-one billion, three hundred thirteen million, one hundred two thousand, twenty-one".