213632131 has 2 divisors, whose sum is σ = 213632132. Its totient is φ = 213632130.

The previous prime is 213632101. The next prime is 213632141. The reversal of 213632131 is 131236312.

213632131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213632131 - 2¹⁵ = 213599363 is a prime.

It is a super-2 number, since 2×213632131² = 91277374791202322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213632101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106816065 + 106816066.

It is an arithmetic number, because the mean of its divisors is an integer number (106816066).

Almost surely, 2^213632131 is an apocalyptic number.

213632131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213632131 is an equidigital number, since it uses as much as digits as its factorization.

213632131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 213632131 is about 14616.1599266018. The cubic root of 213632131 is about 597.7994680017.

Adding to 213632131 its reverse (131236312), we get a palindrome (344868443).

The spelling of 213632131 in words is "two hundred thirteen million, six hundred thirty-two thousand, one hundred thirty-one".