131120233255540 has 48 divisors (see below), whose sum is σ = 275600078014464. Its totient is φ = 52400936432000.

The previous prime is 131120233255523. The next prime is 131120233255573. The reversal of 131120233255540 is 45552332021131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131120233255540.

It is a congruent number.

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, 1021033935 + ... + 1021162345.

It is an arithmetic number, because the mean of its divisors is an integer number (5741668291968).

Almost surely, 2^{131120233255540} is an apocalyptic number.

131120233255540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131120233255540 is an abundant number, since it is smaller than the sum of its proper divisors (144479844758924).

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

131120233255540 is a wasteful number, since it uses less digits than its factorization.

131120233255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173928 (or 173926 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 131120233255540 its reverse (45552332021131), we get a palindrome (176672565276671).

The spelling of 131120233255540 in words is "one hundred thirty-one trillion, one hundred twenty billion, two hundred thirty-three million, two hundred fifty-five thousand, five hundred forty".