131720718 has 16 divisors (see below), whose sum is σ = 263892816. Its totient is φ = 43831680.

The previous prime is 131720713. The next prime is 131720731. The reversal of 131720718 is 817027131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131720713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14953 + ... + 22068.

It is an arithmetic number, because the mean of its divisors is an integer number (16493301).

Almost surely, 2^131720718 is an apocalyptic number.

131720718 is an abundant number, since it is smaller than the sum of its proper divisors (132172098).

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

131720718 is a wasteful number, since it uses less digits than its factorization.

131720718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37619.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 131720718 is about 11476.9646684130. The cubic root of 131720718 is about 508.8049914095.

Adding to 131720718 its reverse (817027131), we get a palindrome (948747849).

The spelling of 131720718 in words is "one hundred thirty-one million, seven hundred twenty thousand, seven hundred eighteen".