131222143140 has 192 divisors, whose sum is σ = 405441324288. Its totient is φ = 31446016000.

The previous prime is 131222143127. The next prime is 131222143141. The reversal of 131222143140 is 41341222131.

It is a self number, because there is not a number n which added to its sum of digits gives 131222143140.

It is not an unprimeable number, because it can be changed into a prime (131222143141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57126472 + ... + 57128768.

It is an arithmetic number, because the mean of its divisors is an integer number (2111673564).

Almost surely, 2^131222143140 is an apocalyptic number.

131222143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131222143140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202720662144).

131222143140 is an abundant number, since it is smaller than the sum of its proper divisors (274219181148).

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

131222143140 is a wasteful number, since it uses less digits than its factorization.

131222143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131222143140 its reverse (41341222131), we get a palindrome (172563365271).

The spelling of 131222143140 in words is "one hundred thirty-one billion, two hundred twenty-two million, one hundred forty-three thousand, one hundred forty".