213376481 has 2 divisors, whose sum is σ = 213376482. Its totient is φ = 213376480.

The previous prime is 213376433. The next prime is 213376487. The reversal of 213376481 is 184673312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206899456 + 6477025 = 14384^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 213376481 - 2⁶ = 213376417 is a prime.

It is a super-2 number, since 2×213376481² = 91059045287886722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213376487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106688240 + 106688241.

It is an arithmetic number, because the mean of its divisors is an integer number (106688241).

Almost surely, 2^213376481 is an apocalyptic number.

It is an amenable number.

213376481 is a deficient number, since it is larger than the sum of its proper divisors (1).

213376481 is an equidigital number, since it uses as much as digits as its factorization.

213376481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 213376481 is about 14607.4118515225. The cubic root of 213376481 is about 597.5609139417.

The spelling of 213376481 in words is "two hundred thirteen million, three hundred seventy-six thousand, four hundred eighty-one".