131001320 has 64 divisors (see below), whose sum is σ = 313528320. Its totient is φ = 49091584.

The previous prime is 131001317. The next prime is 131001331. The reversal of 131001320 is 23100131.

It is a super-2 number, since 2×131001320² = 34322691683484800, which contains 22 as substring.

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, 260189 + ... + 260691.

It is an arithmetic number, because the mean of its divisors is an integer number (4898880).

Almost surely, 2^131001320 is an apocalyptic number.

131001320 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 131001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156764160).

131001320 is an abundant number, since it is smaller than the sum of its proper divisors (182527000).

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

131001320 is a wasteful number, since it uses less digits than its factorization.

131001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 131001320 is about 11445.5808065821. The cubic root of 131001320 is about 507.8770136483.

Adding to 131001320 its reverse (23100131), we get a palindrome (154101451).

The spelling of 131001320 in words is "one hundred thirty-one million, one thousand, three hundred twenty".