213931363 has 2 divisors, whose sum is σ = 213931364. Its totient is φ = 213931362.

The previous prime is 213931283. The next prime is 213931379. The reversal of 213931363 is 363139312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213931363 - 2¹⁷ = 213800291 is a prime.

It is not a weakly prime, because it can be changed into another prime (213931163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106965681 + 106965682.

It is an arithmetic number, because the mean of its divisors is an integer number (106965682).

Almost surely, 2^213931363 is an apocalyptic number.

213931363 is a deficient number, since it is larger than the sum of its proper divisors (1).

213931363 is an equidigital number, since it uses as much as digits as its factorization.

213931363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 31.

The square root of 213931363 is about 14626.3926858265. The cubic root of 213931363 is about 598.0784480031.

It can be divided in two parts, 213931 and 363, that multiplied together give a triangular number (77656953 = T₁₂₄₆₂).

The spelling of 213931363 in words is "two hundred thirteen million, nine hundred thirty-one thousand, three hundred sixty-three".