131133231212 has 24 divisors (see below), whose sum is σ = 229887795312. Its totient is φ = 65451110400.

The previous prime is 131133231193. The next prime is 131133231287. The reversal of 131133231212 is 212132331131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5388512 + ... + 5412792.

It is an arithmetic number, because the mean of its divisors is an integer number (9578658138).

Almost surely, 2^131133231212 is an apocalyptic number.

It is an amenable number.

131133231212 is a deficient number, since it is larger than the sum of its proper divisors (98754564100).

131133231212 is a wasteful number, since it uses less digits than its factorization.

131133231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26609 (or 26607 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 131133231212 its reverse (212132331131), we get a palindrome (343265562343).

The spelling of 131133231212 in words is "one hundred thirty-one billion, one hundred thirty-three million, two hundred thirty-one thousand, two hundred twelve".