131010111220 has 48 divisors (see below), whose sum is σ = 285174844416. Its totient is φ = 50503104000.

The previous prime is 131010111217. The next prime is 131010111269. The reversal of 131010111220 is 22111010131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131010111220.

It is a congruent number.

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, 288976 + ... + 587815.

It is an arithmetic number, because the mean of its divisors is an integer number (5941142592).

Almost surely, 2^131010111220 is an apocalyptic number.

131010111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131010111220 is an abundant number, since it is smaller than the sum of its proper divisors (154164733196).

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

131010111220 is a wasteful number, since it uses less digits than its factorization.

131010111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877072 (or 877070 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 131010111220 its reverse (22111010131), we get a palindrome (153121121351).

The spelling of 131010111220 in words is "one hundred thirty-one billion, ten million, one hundred eleven thousand, two hundred twenty".