131001221230 has 64 divisors (see below), whose sum is σ = 272486918592. Its totient is φ = 44815472640.

The previous prime is 131001221227. The next prime is 131001221249. The reversal of 131001221230 is 32122100131.

It is a super-2 number, since 2×131001221230² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 4767892 + ... + 4795288.

It is an arithmetic number, because the mean of its divisors is an integer number (4257608103).

Almost surely, 2^131001221230 is an apocalyptic number.

131001221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131001221230 is an abundant number, since it is smaller than the sum of its proper divisors (141485697362).

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

131001221230 is a wasteful number, since it uses less digits than its factorization.

131001221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29989.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131001221230 its reverse (32122100131), we get a palindrome (163123321361).

The spelling of 131001221230 in words is "one hundred thirty-one billion, one million, two hundred twenty-one thousand, two hundred thirty".