131213204 has 12 divisors (see below), whose sum is σ = 237030528. Its totient is φ = 63490200.

The previous prime is 131213177. The next prime is 131213249. The reversal of 131213204 is 402312131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528962 + ... + 529209.

It is an arithmetic number, because the mean of its divisors is an integer number (19752544).

Almost surely, 2^131213204 is an apocalyptic number.

It is an amenable number.

131213204 is a deficient number, since it is larger than the sum of its proper divisors (105817324).

131213204 is a wasteful number, since it uses less digits than its factorization.

131213204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058206 (or 1058204 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131213204 is about 11454.8332157217. The cubic root of 131213204 is about 508.1506827682.

Adding to 131213204 its reverse (402312131), we get a palindrome (533525335).

The spelling of 131213204 in words is "one hundred thirty-one million, two hundred thirteen thousand, two hundred four".