403013131421 has 2 divisors, whose sum is σ = 403013131422. Its totient is φ = 403013131420.

The previous prime is 403013131387. The next prime is 403013131441. The reversal of 403013131421 is 124131310304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302048068921 + 100965062500 = 549589^2 + 317750^2 .

It is a cyclic number.

It is not a de Polignac number, because 403013131421 - 2¹⁰ = 403013130397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403013131441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201506565710 + 201506565711.

It is an arithmetic number, because the mean of its divisors is an integer number (201506565711).

Almost surely, 2^403013131421 is an apocalyptic number.

It is an amenable number.

403013131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

403013131421 is an equidigital number, since it uses as much as digits as its factorization.

403013131421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 403013131421 its reverse (124131310304), we get a palindrome (527144441725).

The spelling of 403013131421 in words is "four hundred three billion, thirteen million, one hundred thirty-one thousand, four hundred twenty-one".