2131213241 has 2 divisors, whose sum is σ = 2131213242. Its totient is φ = 2131213240.

The previous prime is 2131213213. The next prime is 2131213297. The reversal of 2131213241 is 1423121312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1639926016 + 491287225 = 40496^2 + 22165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131213241 - 2¹⁰ = 2131212217 is a prime.

It is a super-2 number, since 2×2131213241² = 9084139757227448162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2131219241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065606620 + 1065606621.

It is an arithmetic number, because the mean of its divisors is an integer number (1065606621).

Almost surely, 2^2131213241 is an apocalyptic number.

It is an amenable number.

2131213241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131213241 is an equidigital number, since it uses as much as digits as its factorization.

2131213241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 2131213241 is about 46165.0651575409. The cubic root of 2131213241 is about 1286.8925950803.

Adding to 2131213241 its reverse (1423121312), we get a palindrome (3554334553).

The spelling of 2131213241 in words is "two billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred forty-one".