131232211 has 16 divisors (see below), whose sum is σ = 146562048. Its totient is φ = 116502400.

The previous prime is 131232209. The next prime is 131232251. The reversal of 131232211 is 112232131.

It is a cyclic number.

It is not a de Polignac number, because 131232211 - 2¹ = 131232209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131232251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87510 + ... + 88996.

It is an arithmetic number, because the mean of its divisors is an integer number (9160128).

Almost surely, 2^131232211 is an apocalyptic number.

131232211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131232211 is a deficient number, since it is larger than the sum of its proper divisors (15329837).

131232211 is a wasteful number, since it uses less digits than its factorization.

131232211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682.

The product of its digits is 72, while the sum is 16.

The square root of 131232211 is about 11455.6628354714. The cubic root of 131232211 is about 508.1752177830.

Adding to 131232211 its reverse (112232131), we get a palindrome (243464342).

The spelling of 131232211 in words is "one hundred thirty-one million, two hundred thirty-two thousand, two hundred eleven".