131244431402120 has 64 divisors (see below), whose sum is σ = 296522973255600. Its totient is φ = 52280550604800.

The previous prime is 131244431402017. The next prime is 131244431402159. The reversal of 131244431402120 is 21204134442131.

It can be written as a sum of positive squares in 8 ways, for example, as 74779636740484 + 56464794661636 = 8647522^2 + 7514306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17794820 + ... + 24065420.

Almost surely, 2^{131244431402120} is an apocalyptic number.

131244431402120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131244431402120 is an abundant number, since it is smaller than the sum of its proper divisors (165278541853480).

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

131244431402120 is a wasteful number, since it uses less digits than its factorization.

131244431402120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272778 (or 6272774 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 131244431402120 its reverse (21204134442131), we get a palindrome (152448565844251).

The spelling of 131244431402120 in words is "one hundred thirty-one trillion, two hundred forty-four billion, four hundred thirty-one million, four hundred two thousand, one hundred twenty".