131220111302 has 8 divisors (see below), whose sum is σ = 224948762256. Its totient is φ = 56237190552.

The previous prime is 131220111287. The next prime is 131220111307. The reversal of 131220111302 is 203111022131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131220111302² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131220111307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4686432533 + ... + 4686432560.

It is an arithmetic number, because the mean of its divisors is an integer number (28118595282).

Almost surely, 2^131220111302 is an apocalyptic number.

131220111302 is a deficient number, since it is larger than the sum of its proper divisors (93728650954).

131220111302 is an equidigital number, since it uses as much as digits as its factorization.

131220111302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9372865102.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131220111302 its reverse (203111022131), we get a palindrome (334331133433).

The spelling of 131220111302 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred eleven thousand, three hundred two".