2104210931 has 2 divisors, whose sum is σ = 2104210932. Its totient is φ = 2104210930.

The previous prime is 2104210907. The next prime is 2104210951. The reversal of 2104210931 is 1390124012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2104210931 - 2²² = 2100016627 is a prime.

It is a super-2 number, since 2×2104210931² = 8855407284279773522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2104210897 and 2104210906.

It is not a weakly prime, because it can be changed into another prime (2104210951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052105465 + 1052105466.

It is an arithmetic number, because the mean of its divisors is an integer number (1052105466).

Almost surely, 2^2104210931 is an apocalyptic number.

2104210931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104210931 is an equidigital number, since it uses as much as digits as its factorization.

2104210931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2104210931 is about 45871.6789642585. The cubic root of 2104210931 is about 1281.4345348611.

Adding to 2104210931 its reverse (1390124012), we get a palindrome (3494334943).

The spelling of 2104210931 in words is "two billion, one hundred four million, two hundred ten thousand, nine hundred thirty-one".