131228340848 has 40 divisors (see below), whose sum is σ = 277475316336. Its totient is φ = 59626380800.

The previous prime is 131228340847. The next prime is 131228340899. The reversal of 131228340848 is 848043822131.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 131228340799 and 131228340808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131228340847) 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, 321818 + ... + 604998.

Almost surely, 2^131228340848 is an apocalyptic number.

It is an amenable number.

131228340848 is an abundant number, since it is smaller than the sum of its proper divisors (146246975488).

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

131228340848 is a wasteful number, since it uses less digits than its factorization.

131228340848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285833 (or 285827 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 131228340848 in words is "one hundred thirty-one billion, two hundred twenty-eight million, three hundred forty thousand, eight hundred forty-eight".