101303131021 has 4 divisors (see below), whose sum is σ = 101305992544. Its totient is φ = 101300269500.

The previous prime is 101303130989. The next prime is 101303131031. The reversal of 101303131021 is 120131303101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120131303101 = 113 ⋅1063108877.

It is a cyclic number.

It is not a de Polignac number, because 101303131021 - 2⁵ = 101303130989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101303130986 and 101303131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101303131031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376985 + ... + 1448686.

It is an arithmetic number, because the mean of its divisors is an integer number (25326498136).

Almost surely, 2^101303131021 is an apocalyptic number.

It is an amenable number.

101303131021 is a deficient number, since it is larger than the sum of its proper divisors (2861523).

101303131021 is an equidigital number, since it uses as much as digits as its factorization.

101303131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861522.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 101303131021 its reverse (120131303101), we get a palindrome (221434434122).

It can be divided in two parts, 101303 and 131021, that added together give a square (232324 = 482²).

The spelling of 101303131021 in words is "one hundred one billion, three hundred three million, one hundred thirty-one thousand, twenty-one".