2431891213 has 2 divisors, whose sum is σ = 2431891214. Its totient is φ = 2431891212.

The previous prime is 2431891211. The next prime is 2431891237. The reversal of 2431891213 is 3121981342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2420344809 + 11546404 = 49197^2 + 3398^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431891213 - 2¹ = 2431891211 is a prime.

It is a super-2 number, since 2×2431891213² = 11828189743733222738, which contains 22 as substring.

Together with 2431891211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2431891211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215945606 + 1215945607.

It is an arithmetic number, because the mean of its divisors is an integer number (1215945607).

Almost surely, 2^2431891213 is an apocalyptic number.

It is an amenable number.

2431891213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431891213 is an equidigital number, since it uses as much as digits as its factorization.

2431891213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 2431891213 is about 49314.2090375583. The cubic root of 2431891213 is about 1344.7701109284.

The spelling of 2431891213 in words is "two billion, four hundred thirty-one million, eight hundred ninety-one thousand, two hundred thirteen".