131021230220 has 96 divisors (see below), whose sum is σ = 281991326400. Its totient is φ = 51120460800.

The previous prime is 131021230181. The next prime is 131021230231. The reversal of 131021230220 is 22032120131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118143026 + ... + 118144134.

It is an arithmetic number, because the mean of its divisors is an integer number (2937409650).

Almost surely, 2^131021230220 is an apocalyptic number.

131021230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131021230220 is an abundant number, since it is smaller than the sum of its proper divisors (150970096180).

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

131021230220 is a wasteful number, since it uses less digits than its factorization.

131021230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 131021230220 its reverse (22032120131), we get a palindrome (153053350351).

The spelling of 131021230220 in words is "one hundred thirty-one billion, twenty-one million, two hundred thirty thousand, two hundred twenty".