1212533131 has 8 divisors (see below), whose sum is σ = 1239552000. Its totient is φ = 1185729960.

The previous prime is 1212533117. The next prime is 1212533207. The reversal of 1212533131 is 1313352121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212533131 - 2²⁹ = 675662219 is a prime.

It is a super-2 number, since 2×1212533131² = 2940473187545326322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212533111) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 42531 + ... + 65068.

It is an arithmetic number, because the mean of its divisors is an integer number (154944000).

Almost surely, 2^1212533131 is an apocalyptic number.

1212533131 is a deficient number, since it is larger than the sum of its proper divisors (27018869).

1212533131 is a wasteful number, since it uses less digits than its factorization.

1212533131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107849.

The product of its digits is 540, while the sum is 22.

The square root of 1212533131 is about 34821.4464231456. The cubic root of 1212533131 is about 1066.3453300398.

Adding to 1212533131 its reverse (1313352121), we get a palindrome (2525885252).

The spelling of 1212533131 in words is "one billion, two hundred twelve million, five hundred thirty-three thousand, one hundred thirty-one".