131212132 has 6 divisors (see below), whose sum is σ = 229621238. Its totient is φ = 65606064.

The previous prime is 131212111. The next prime is 131212183. The reversal of 131212132 is 231212131.

It can be written as a sum of positive squares in only one way, i.e., 111640356 + 19571776 = 10566^2 + 4424^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16401513 + ... + 16401520.

Almost surely, 2^131212132 is an apocalyptic number.

It is an amenable number.

131212132 is a deficient number, since it is larger than the sum of its proper divisors (98409106).

131212132 is a wasteful number, since it uses less digits than its factorization.

131212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32803037 (or 32803035 counting only the distinct ones).

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

The square root of 131212132 is about 11454.7864231508. The cubic root of 131212132 is about 508.1492989161.

Adding to 131212132 its reverse (231212131), we get a palindrome (362424263).

Subtracting 131212132 from its reverse (231212131), we obtain a palindrome (99999999).

The spelling of 131212132 in words is "one hundred thirty-one million, two hundred twelve thousand, one hundred thirty-two".