20213131233103 has 2 divisors, whose sum is σ = 20213131233104. Its totient is φ = 20213131233102.

The previous prime is 20213131233079. The next prime is 20213131233151. The reversal of 20213131233103 is 30133213131202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20213131233103 - 2²¹ = 20213129135951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213131233193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106565616551 + 10106565616552.

It is an arithmetic number, because the mean of its divisors is an integer number (10106565616552).

Almost surely, 2^{20213131233103} is an apocalyptic number.

20213131233103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213131233103 is an equidigital number, since it uses as much as digits as its factorization.

20213131233103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20213131233103 its reverse (30133213131202), we get a palindrome (50346344364305).

It can be divided in two parts, 2021313 and 1233103, that added together give a square (3254416 = 1804²).

The spelling of 20213131233103 in words is "twenty trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred three".