213369931 has 8 divisors (see below), whose sum is σ = 220673024. Its totient is φ = 206093160.

The previous prime is 213369929. The next prime is 213369971. The reversal of 213369931 is 139963312.

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 213369931 - 2¹ = 213369929 is a prime.

It is a super-2 number, since 2×213369931² = 91053454909889522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213369911) 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, 10666 + ... + 23248.

It is an arithmetic number, because the mean of its divisors is an integer number (27584128).

Almost surely, 2^213369931 is an apocalyptic number.

213369931 is a deficient number, since it is larger than the sum of its proper divisors (7303093).

213369931 is a wasteful number, since it uses less digits than its factorization.

213369931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13161.

The product of its digits is 26244, while the sum is 37.

The square root of 213369931 is about 14607.1876485517. The cubic root of 213369931 is about 597.5547994533.

The spelling of 213369931 in words is "two hundred thirteen million, three hundred sixty-nine thousand, nine hundred thirty-one".