131140720 has 80 divisors (see below), whose sum is σ = 325077408. Its totient is φ = 49029120.

The previous prime is 131140649. The next prime is 131140727. The reversal of 131140720 is 27041131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131140727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286732 + ... + 287188.

Almost surely, 2^131140720 is an apocalyptic number.

131140720 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 131140720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162538704).

131140720 is an abundant number, since it is smaller than the sum of its proper divisors (193936688).

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

131140720 is a wasteful number, since it uses less digits than its factorization.

131140720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 131140720 is about 11451.6688740113. The cubic root of 131140720 is about 508.0570956968.

Adding to 131140720 its reverse (27041131), we get a palindrome (158181851).

The spelling of 131140720 in words is "one hundred thirty-one million, one hundred forty thousand, seven hundred twenty".