131010220 has 48 divisors (see below), whose sum is σ = 302123808. Its totient is φ = 47324160.

The previous prime is 131010179. The next prime is 131010227. The reversal of 131010220 is 22010131.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 131010197 and 131010206.

It is not an unprimeable number, because it can be changed into a prime (131010227) 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, 32644 + ... + 36436.

It is an arithmetic number, because the mean of its divisors is an integer number (6294246).

Almost surely, 2^131010220 is an apocalyptic number.

131010220 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 131010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151061904).

131010220 is an abundant number, since it is smaller than the sum of its proper divisors (171113588).

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

131010220 is a wasteful number, since it uses less digits than its factorization.

131010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970 (or 3968 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 131010220 is about 11445.9695963252. The cubic root of 131010220 is about 507.8885148124. Note that the first 3 decimals are identical.

Adding to 131010220 its reverse (22010131), we get a palindrome (153020351).

The spelling of 131010220 in words is "one hundred thirty-one million, ten thousand, two hundred twenty".