101131020321 has 4 divisors (see below), whose sum is σ = 134841360432. Its totient is φ = 67420680212.

The previous prime is 101131020307. The next prime is 101131020337. The reversal of 101131020321 is 123020131101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101131020321 - 2⁹ = 101131019809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101131020321.

It is not an unprimeable number, because it can be changed into a prime (101131027321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16855170051 + ... + 16855170056.

It is an arithmetic number, because the mean of its divisors is an integer number (33710340108).

Almost surely, 2^101131020321 is an apocalyptic number.

It is an amenable number.

101131020321 is a deficient number, since it is larger than the sum of its proper divisors (33710340111).

101131020321 is an equidigital number, since it uses as much as digits as its factorization.

101131020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33710340110.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 101131020321 its reverse (123020131101), we get a palindrome (224151151422).

The spelling of 101131020321 in words is "one hundred one billion, one hundred thirty-one million, twenty thousand, three hundred twenty-one".