10131440220 has 72 divisors (see below), whose sum is σ = 33525863280. Its totient is φ = 2456106240.

The previous prime is 10131440183. The next prime is 10131440251. The reversal of 10131440220 is 2204413101.

10131440220 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 1 + 440 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10131440193 and 10131440202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2556465 + ... + 2560424.

It is an arithmetic number, because the mean of its divisors is an integer number (465636990).

Almost surely, 2^10131440220 is an apocalyptic number.

10131440220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10131440220 is an abundant number, since it is smaller than the sum of its proper divisors (23394423060).

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

10131440220 is a wasteful number, since it uses less digits than its factorization.

10131440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116915 (or 5116910 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10131440220 its reverse (2204413101), we get a palindrome (12335853321).

The spelling of 10131440220 in words is "ten billion, one hundred thirty-one million, four hundred forty thousand, two hundred twenty".