213871629 has 8 divisors (see below), whose sum is σ = 286178112. Its totient is φ = 142073120.

The previous prime is 213871627. The next prime is 213871633. The reversal of 213871629 is 926178312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213871629 - 2¹ = 213871627 is a prime.

It is a super-2 number, since 2×213871629² = 91482147382227282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213871627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126009 + ... + 127694.

It is an arithmetic number, because the mean of its divisors is an integer number (35772264).

Almost surely, 2^213871629 is an apocalyptic number.

It is an amenable number.

213871629 is a deficient number, since it is larger than the sum of its proper divisors (72306483).

213871629 is a wasteful number, since it uses less digits than its factorization.

213871629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253987.

The product of its digits is 36288, while the sum is 39.

The square root of 213871629 is about 14624.3505496825. The cubic root of 213871629 is about 598.0227775875.

The spelling of 213871629 in words is "two hundred thirteen million, eight hundred seventy-one thousand, six hundred twenty-nine".