131030202321 has 12 divisors (see below), whose sum is σ = 189364809348. Its totient is φ = 87307793664.

The previous prime is 131030202299. The next prime is 131030202323. The reversal of 131030202321 is 123202030131.

131030202321 is a `hidden beast` number, since 1 + 310 + 30 + 2 + 0 + 2 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 117810951696 + 13219250625 = 343236^2 + 114975^2 .

It is not a de Polignac number, because 131030202321 - 2³¹ = 128882718673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131030202294 and 131030202303.

It is not an unprimeable number, because it can be changed into a prime (131030202323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3788040 + ... + 3822473.

It is an arithmetic number, because the mean of its divisors is an integer number (15780400779).

Almost surely, 2^131030202321 is an apocalyptic number.

It is an amenable number.

131030202321 is a deficient number, since it is larger than the sum of its proper divisors (58334607027).

131030202321 is a wasteful number, since it uses less digits than its factorization.

131030202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612432 (or 7612429 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 131030202321 its reverse (123202030131), we get a palindrome (254232232452).

The spelling of 131030202321 in words is "one hundred thirty-one billion, thirty million, two hundred two thousand, three hundred twenty-one".