202123203112331 has 4 divisors (see below), whose sum is σ = 202130120194464. Its totient is φ = 202116286030200.

The previous prime is 202123203112253. The next prime is 202123203112403. The reversal of 202123203112331 is 133211302321202.

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 202123203112331 - 2⁴⁶ = 131754458934667 is a prime.

It is a super-2 number, since 2×202123203112331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202123203112331.

It is not an unprimeable number, because it can be changed into a prime (202123200112331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3458497235 + ... + 3458555676.

It is an arithmetic number, because the mean of its divisors is an integer number (50532530048616).

Almost surely, 2^{202123203112331} is an apocalyptic number.

202123203112331 is a deficient number, since it is larger than the sum of its proper divisors (6917082133).

202123203112331 is an equidigital number, since it uses as much as digits as its factorization.

202123203112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917082132.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 202123203112331 its reverse (133211302321202), we get a palindrome (335334505433533).

The spelling of 202123203112331 in words is "two hundred two trillion, one hundred twenty-three billion, two hundred three million, one hundred twelve thousand, three hundred thirty-one".