131485720 has 16 divisors (see below), whose sum is σ = 295842960. Its totient is φ = 52594272.

The previous prime is 131485699. The next prime is 131485741. The reversal of 131485720 is 27584131.

It is an interprime number because it is at equal distance from previous prime (131485699) and next prime (131485741).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643532 + ... + 1643611.

It is an arithmetic number, because the mean of its divisors is an integer number (18490185).

Almost surely, 2^131485720 is an apocalyptic number.

131485720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131485720 is an abundant number, since it is smaller than the sum of its proper divisors (164357240).

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

131485720 is a wasteful number, since it uses less digits than its factorization.

131485720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287154 (or 3287150 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 131485720 is about 11466.7222866868. The cubic root of 131485720 is about 508.5022313137.

The spelling of 131485720 in words is "one hundred thirty-one million, four hundred eighty-five thousand, seven hundred twenty".