11131413421 has 2 divisors, whose sum is σ = 11131413422. Its totient is φ = 11131413420.

The previous prime is 11131413353. The next prime is 11131413439. The reversal of 11131413421 is 12431413111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9141272100 + 1990141321 = 95610^2 + 44611^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131413421 - 2¹¹ = 11131411373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11131413392 and 11131413401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131417421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565706710 + 5565706711.

It is an arithmetic number, because the mean of its divisors is an integer number (5565706711).

Almost surely, 2^11131413421 is an apocalyptic number.

It is an amenable number.

11131413421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131413421 is an equidigital number, since it uses as much as digits as its factorization.

11131413421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

Adding to 11131413421 its reverse (12431413111), we get a palindrome (23562826532).

The spelling of 11131413421 in words is "eleven billion, one hundred thirty-one million, four hundred thirteen thousand, four hundred twenty-one".