131432213 has 4 divisors (see below), whose sum is σ = 143380608. Its totient is φ = 119483820.

The previous prime is 131432201. The next prime is 131432233. The reversal of 131432213 is 312234131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131432213 - 2²⁰ = 130383637 is a prime.

It is a super-2 number, since 2×131432213² = 34548853228154738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131432233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5974181 + ... + 5974202.

It is an arithmetic number, because the mean of its divisors is an integer number (35845152).

Almost surely, 2^131432213 is an apocalyptic number.

It is an amenable number.

131432213 is a deficient number, since it is larger than the sum of its proper divisors (11948395).

131432213 is a wasteful number, since it uses less digits than its factorization.

131432213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948394.

The product of its digits is 432, while the sum is 20.

The square root of 131432213 is about 11464.3889065227. The cubic root of 131432213 is about 508.4332450631.

Adding to 131432213 its reverse (312234131), we get a palindrome (443666344).

The spelling of 131432213 in words is "one hundred thirty-one million, four hundred thirty-two thousand, two hundred thirteen".