20313132021 has 64 divisors (see below), whose sum is σ = 37560176640. Its totient is φ = 10563618240.

The previous prime is 20313132011. The next prime is 20313132061. The reversal of 20313132021 is 12023131302.

It is not a de Polignac number, because 20313132021 - 2¹¹ = 20313129973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313131985 and 20313132003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313132011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116226 + ... + 232668.

It is an arithmetic number, because the mean of its divisors is an integer number (586877760).

Almost surely, 2^20313132021 is an apocalyptic number.

20313132021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20313132021 is a deficient number, since it is larger than the sum of its proper divisors (17247044619).

20313132021 is a wasteful number, since it uses less digits than its factorization.

20313132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116543 (or 116537 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20313132021 its reverse (12023131302), we get a palindrome (32336263323).

The spelling of 20313132021 in words is "twenty billion, three hundred thirteen million, one hundred thirty-two thousand, twenty-one".