2104213031 has 2 divisors, whose sum is σ = 2104213032. Its totient is φ = 2104213030.

The previous prime is 2104213019. The next prime is 2104213057. The reversal of 2104213031 is 1303124012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2104213031 - 2⁶ = 2104212967 is a prime.

It is a super-2 number, since 2×2104213031² = 8855424959660413922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2104213061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052106515 + 1052106516.

It is an arithmetic number, because the mean of its divisors is an integer number (1052106516).

Almost surely, 2^2104213031 is an apocalyptic number.

2104213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104213031 is an equidigital number, since it uses as much as digits as its factorization.

2104213031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2104213031 is about 45871.7018541933. The cubic root of 2104213031 is about 1281.4349611510.

Adding to 2104213031 its reverse (1303124012), we get a palindrome (3407337043).

The spelling of 2104213031 in words is "two billion, one hundred four million, two hundred thirteen thousand, thirty-one".