213165031 has 8 divisors (see below), whose sum is σ = 215115264. Its totient is φ = 211224120.

The previous prime is 213165011. The next prime is 213165041. The reversal of 213165031 is 130561312.

It is a happy number.

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 213165031 - 2¹⁷ = 213033959 is a prime.

It is a super-2 number, since 2×213165031² = 90878660882461922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213164993 and 213165011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213165011) 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, 48516 + ... + 52726.

It is an arithmetic number, because the mean of its divisors is an integer number (26889408).

Almost surely, 2^213165031 is an apocalyptic number.

213165031 is a deficient number, since it is larger than the sum of its proper divisors (1950233).

213165031 is a wasteful number, since it uses less digits than its factorization.

213165031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 213165031 is about 14600.1722935039. The cubic root of 213165031 is about 597.3634601026.

The spelling of 213165031 in words is "two hundred thirteen million, one hundred sixty-five thousand, thirty-one".