131223103132240 has 80 divisors (see below), whose sum is σ = 348682639989888. Its totient is φ = 44990248048128.

The previous prime is 131223103132111. The next prime is 131223103132343. The reversal of 131223103132240 is 42231301322131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 131223103132199 and 131223103132208.

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, 47743254 + ... + 50416906.

Almost surely, 2^{131223103132240} is an apocalyptic number.

131223103132240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131223103132240 is an abundant number, since it is smaller than the sum of its proper divisors (217459536857648).

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

131223103132240 is a wasteful number, since it uses less digits than its factorization.

131223103132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761316 (or 2761310 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 131223103132240 its reverse (42231301322131), we get a palindrome (173454404454371).

The spelling of 131223103132240 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, one hundred three million, one hundred thirty-two thousand, two hundred forty".