213499131 has 8 divisors (see below), whose sum is σ = 294481680. Its totient is φ = 137424672.

The previous prime is 213499129. The next prime is 213499199. The reversal of 213499131 is 131994312.

It is a happy number.

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

It is not a de Polignac number, because 213499131 - 2¹ = 213499129 is a prime.

It is a super-2 number, since 2×213499131² = 91163757875510322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 213499092 and 213499101.

It is not an unprimeable number, because it can be changed into a prime (213499331) 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 7 ways as a sum of consecutive naturals, for example, 1226920 + ... + 1227093.

It is an arithmetic number, because the mean of its divisors is an integer number (36810210).

Almost surely, 2^213499131 is an apocalyptic number.

213499131 is a deficient number, since it is larger than the sum of its proper divisors (80982549).

213499131 is a wasteful number, since it uses less digits than its factorization.

213499131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454045.

The product of its digits is 5832, while the sum is 33.

The square root of 213499131 is about 14611.6094596044. The cubic root of 213499131 is about 597.6753858016.

The spelling of 213499131 in words is "two hundred thirteen million, four hundred ninety-nine thousand, one hundred thirty-one".