213031129 has 8 divisors (see below), whose sum is σ = 229959360. Its totient is φ = 196741776.

The previous prime is 213031069. The next prime is 213031153. The reversal of 213031129 is 921130312.

213031129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213031129 - 2⁷ = 213031001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213031729) 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, 159027 + ... + 160360.

It is an arithmetic number, because the mean of its divisors is an integer number (28744920).

Almost surely, 2^213031129 is an apocalyptic number.

213031129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

213031129 is a deficient number, since it is larger than the sum of its proper divisors (16928231).

213031129 is a wasteful number, since it uses less digits than its factorization.

213031129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319439.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 213031129 is about 14595.5859423320. The cubic root of 213031129 is about 597.2383537222.

The spelling of 213031129 in words is "two hundred thirteen million, thirty-one thousand, one hundred twenty-nine".