131023010220 has 24 divisors (see below), whose sum is σ = 366864428784. Its totient is φ = 34939469376.

The previous prime is 131023010159. The next prime is 131023010221. The reversal of 131023010220 is 22010320131.

It is a super-2 number, since 2×131023010220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131023010220.

It is not an unprimeable number, because it can be changed into a prime (131023010221) 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, 1091858359 + ... + 1091858478.

It is an arithmetic number, because the mean of its divisors is an integer number (15286017866).

Almost surely, 2^131023010220 is an apocalyptic number.

131023010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131023010220 is an abundant number, since it is smaller than the sum of its proper divisors (235841418564).

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

131023010220 is a wasteful number, since it uses less digits than its factorization.

131023010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183716849 (or 2183716847 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 131023010220 its reverse (22010320131), we get a palindrome (153033330351).

The spelling of 131023010220 in words is "one hundred thirty-one billion, twenty-three million, ten thousand, two hundred twenty".