131123120 has 40 divisors (see below), whose sum is σ = 307840416. Its totient is φ = 51936768.

The previous prime is 131123107. The next prime is 131123131. The reversal of 131123120 is 21321131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 131123095 and 131123104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284 + ... + 16196.

Almost surely, 2^131123120 is an apocalyptic number.

131123120 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 131123120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153920208).

131123120 is an abundant number, since it is smaller than the sum of its proper divisors (176717296).

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

131123120 is a wasteful number, since it uses less digits than its factorization.

131123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16029 (or 16023 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131123120 is about 11450.9004012785. The cubic root of 131123120 is about 508.0343664104.

Adding to 131123120 its reverse (21321131), we get a palindrome (152444251).

The spelling of 131123120 in words is "one hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty".