131202123012 has 72 divisors (see below), whose sum is σ = 332486219520. Its totient is φ = 43623901440.

The previous prime is 131202123011. The next prime is 131202123029. The reversal of 131202123012 is 210321202131.

131202123012 is a `hidden beast` number, since 131 + 20 + 212 + 301 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131202123011) 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 23 ways as a sum of consecutive naturals, for example, 27788812 + ... + 27793532.

It is an arithmetic number, because the mean of its divisors is an integer number (4617864160).

Almost surely, 2^131202123012 is an apocalyptic number.

131202123012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131202123012 is an abundant number, since it is smaller than the sum of its proper divisors (201284096508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131202123012 is a wasteful number, since it uses less digits than its factorization.

131202123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6513 (or 6508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131202123012 its reverse (210321202131), we get a palindrome (341523325143).

The spelling of 131202123012 in words is "one hundred thirty-one billion, two hundred two million, one hundred twenty-three thousand, twelve".