213371953 has 2 divisors, whose sum is σ = 213371954. Its totient is φ = 213371952.

The previous prime is 213371941. The next prime is 213371993. The reversal of 213371953 is 359173312.

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., 148279329 + 65092624 = 12177^2 + 8068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213371953 is a prime.

It is not a weakly prime, because it can be changed into another prime (213371993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106685976 + 106685977.

It is an arithmetic number, because the mean of its divisors is an integer number (106685977).

Almost surely, 2^213371953 is an apocalyptic number.

It is an amenable number.

213371953 is a deficient number, since it is larger than the sum of its proper divisors (1).

213371953 is an equidigital number, since it uses as much as digits as its factorization.

213371953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 34.

The square root of 213371953 is about 14607.2568608894. The cubic root of 213371953 is about 597.5566870232.

The spelling of 213371953 in words is "two hundred thirteen million, three hundred seventy-one thousand, nine hundred fifty-three".