4031113421 has 2 divisors, whose sum is σ = 4031113422. Its totient is φ = 4031113420.

The previous prime is 4031113409. The next prime is 4031113439. The reversal of 4031113421 is 1243111304.

4031113421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3895507396 + 135606025 = 62414^2 + 11645^2 .

It is a cyclic number.

It is not a de Polignac number, because 4031113421 - 2¹⁸ = 4030851277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4031113393 and 4031113402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4031113451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015556710 + 2015556711.

It is an arithmetic number, because the mean of its divisors is an integer number (2015556711).

Almost surely, 2^4031113421 is an apocalyptic number.

It is an amenable number.

4031113421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4031113421 is an equidigital number, since it uses as much as digits as its factorization.

4031113421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4031113421 is about 63491.0499283167. The cubic root of 4031113421 is about 1591.5062162551.

Adding to 4031113421 its reverse (1243111304), we get a palindrome (5274224725).

The spelling of 4031113421 in words is "four billion, thirty-one million, one hundred thirteen thousand, four hundred twenty-one".