131212134 has 24 divisors (see below), whose sum is σ = 285121200. Its totient is φ = 43609968.

The previous prime is 131212111. The next prime is 131212183. The reversal of 131212134 is 431212131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4162 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (11880050).

Almost surely, 2^131212134 is an apocalyptic number.

131212134 is an abundant number, since it is smaller than the sum of its proper divisors (153909066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131212134 is a wasteful number, since it uses less digits than its factorization.

131212134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244 (or 21241 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131212134 is about 11454.7865104506. The cubic root of 131212134 is about 508.1493014979.

Adding to 131212134 its reverse (431212131), we get a palindrome (562424265).

The spelling of 131212134 in words is "one hundred thirty-one million, two hundred twelve thousand, one hundred thirty-four".