213430131 has 6 divisors (see below), whose sum is σ = 308287980. Its totient is φ = 142286748.

The previous prime is 213430103. The next prime is 213430141. The reversal of 213430131 is 131034312.

It is not a de Polignac number, because 213430131 - 2⁶ = 213430067 is a prime.

It is a super-2 number, since 2×213430131² = 91104841637354322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213430141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11857221 + ... + 11857238.

It is an arithmetic number, because the mean of its divisors is an integer number (51381330).

Almost surely, 2^213430131 is an apocalyptic number.

213430131 is a deficient number, since it is larger than the sum of its proper divisors (94857849).

213430131 is a wasteful number, since it uses less digits than its factorization.

213430131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23714465 (or 23714462 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 213430131 is about 14609.2481326042. The cubic root of 213430131 is about 597.6109920264.

Adding to 213430131 its reverse (131034312), we get a palindrome (344464443).

The spelling of 213430131 in words is "two hundred thirteen million, four hundred thirty thousand, one hundred thirty-one".