131030223421 has 4 divisors (see below), whose sum is σ = 131031371772. Its totient is φ = 131029075072.

The previous prime is 131030223419. The next prime is 131030223427. The reversal of 131030223421 is 124322030131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67672299321 + 63357924100 = 260139^2 + 251710^2 .

It is a cyclic number.

It is not a de Polignac number, because 131030223421 - 2¹ = 131030223419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131030223392 and 131030223401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131030223427) 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, 381460 + ... + 638413.

It is an arithmetic number, because the mean of its divisors is an integer number (32757842943).

Almost surely, 2^131030223421 is an apocalyptic number.

It is an amenable number.

131030223421 is a deficient number, since it is larger than the sum of its proper divisors (1148351).

131030223421 is a wasteful number, since it uses less digits than its factorization.

131030223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148350.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131030223421 its reverse (124322030131), we get a palindrome (255352253552).

The spelling of 131030223421 in words is "one hundred thirty-one billion, thirty million, two hundred twenty-three thousand, four hundred twenty-one".