2731838521 has 2 divisors, whose sum is σ = 2731838522. Its totient is φ = 2731838520.

The previous prime is 2731838497. The next prime is 2731838567. The reversal of 2731838521 is 1258381372.

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., 2360890921 + 370947600 = 48589^2 + 19260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731838521 - 2⁵ = 2731838489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2731838581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365919260 + 1365919261.

It is an arithmetic number, because the mean of its divisors is an integer number (1365919261).

Almost surely, 2^2731838521 is an apocalyptic number.

It is an amenable number.

2731838521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731838521 is an equidigital number, since it uses as much as digits as its factorization.

2731838521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 2731838521 is about 52266.9926531076. The cubic root of 2731838521 is about 1397.9286581577.

The spelling of 2731838521 in words is "two billion, seven hundred thirty-one million, eight hundred thirty-eight thousand, five hundred twenty-one".