131212203 has 8 divisors (see below), whose sum is σ = 178672128. Its totient is φ = 85613544.

The previous prime is 131212199. The next prime is 131212223. The reversal of 131212203 is 302212131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131212203 - 2² = 131212199 is a prime.

It is a super-2 number, since 2×131212203² = 34433284432226418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131212223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465151 + ... + 465432.

It is an arithmetic number, because the mean of its divisors is an integer number (22334016).

Almost surely, 2^131212203 is an apocalyptic number.

131212203 is a deficient number, since it is larger than the sum of its proper divisors (47459925).

131212203 is an equidigital number, since it uses as much as digits as its factorization.

131212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930633.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131212203 is about 11454.7895222915. The cubic root of 131212203 is about 508.1493905707.

Subtracting from 131212203 its product of nonzero digits (72), we obtain a palindrome (131212131).

Adding to 131212203 its reverse (302212131), we get a palindrome (433424334).

The spelling of 131212203 in words is "one hundred thirty-one million, two hundred twelve thousand, two hundred three".