131212626028 has 24 divisors (see below), whose sum is σ = 252567063504. Its totient is φ = 59642100320.

The previous prime is 131212626023. The next prime is 131212626031. The reversal of 131212626028 is 820626212131.

It is a junction number, because it is equal to n+sod(n) for n = 131212625984 and 131212626002.

It is not an unprimeable number, because it can be changed into a prime (131212626023) 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, 12317425 + ... + 12328072.

It is an arithmetic number, because the mean of its divisors is an integer number (10523627646).

Almost surely, 2^131212626028 is an apocalyptic number.

It is an amenable number.

131212626028 is a deficient number, since it is larger than the sum of its proper divisors (121354437476).

131212626028 is a wasteful number, since it uses less digits than its factorization.

131212626028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24645534 (or 24645510 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

Adding to 131212626028 its reverse (820626212131), we get a palindrome (951838838159).

The spelling of 131212626028 in words is "one hundred thirty-one billion, two hundred twelve million, six hundred twenty-six thousand, twenty-eight".