213446131 has 2 divisors, whose sum is σ = 213446132. Its totient is φ = 213446130.

The previous prime is 213446117. The next prime is 213446143. The reversal of 213446131 is 131644312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213446131 - 2¹⁵ = 213413363 is a prime.

It is a super-3 number, since 3×213446131³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 213446096 and 213446105.

It is not a weakly prime, because it can be changed into another prime (213446231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106723065 + 106723066.

It is an arithmetic number, because the mean of its divisors is an integer number (106723066).

Almost surely, 2^213446131 is an apocalyptic number.

213446131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213446131 is an equidigital number, since it uses as much as digits as its factorization.

213446131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 213446131 is about 14609.7957206800. The cubic root of 213446131 is about 597.6259251522.

The spelling of 213446131 in words is "two hundred thirteen million, four hundred forty-six thousand, one hundred thirty-one".