213553143 has 12 divisors (see below), whose sum is σ = 308972040. Its totient is φ = 142135056.

The previous prime is 213553139. The next prime is 213553147. The reversal of 213553143 is 341355312.

It is an interprime number because it is at equal distance from previous prime (213553139) and next prime (213553147).

It is not a de Polignac number, because 213553143 - 2² = 213553139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213553147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13596 + ... + 24737.

It is an arithmetic number, because the mean of its divisors is an integer number (25747670).

Almost surely, 2^213553143 is an apocalyptic number.

213553143 is a deficient number, since it is larger than the sum of its proper divisors (95418897).

213553143 is a wasteful number, since it uses less digits than its factorization.

213553143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38958 (or 38955 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 213553143 is about 14613.4575990763. The cubic root of 213553143 is about 597.7257824487.

It can be divided in two parts, 2135 and 53143, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 213553143 in words is "two hundred thirteen million, five hundred fifty-three thousand, one hundred forty-three".