213413431 has 8 divisors (see below), whose sum is σ = 266073984. Its totient is φ = 166296120.

The previous prime is 213413419. The next prime is 213413437. The reversal of 213413431 is 134314312.

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 213413431 - 2¹¹ = 213411383 is a prime.

It is a super-2 number, since 2×213413431² = 91090585062383522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213413437) 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, 1385725 + ... + 1385878.

It is an arithmetic number, because the mean of its divisors is an integer number (33259248).

Almost surely, 2^213413431 is an apocalyptic number.

213413431 is a deficient number, since it is larger than the sum of its proper divisors (52660553).

213413431 is a wasteful number, since it uses less digits than its factorization.

213413431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771621.

The product of its digits is 864, while the sum is 22.

The square root of 213413431 is about 14608.6765656578. The cubic root of 213413431 is about 597.5954047804.

Adding to 213413431 its reverse (134314312), we get a palindrome (347727743).

The spelling of 213413431 in words is "two hundred thirteen million, four hundred thirteen thousand, four hundred thirty-one".