424131422381 has 2 divisors, whose sum is σ = 424131422382. Its totient is φ = 424131422380.

The previous prime is 424131422359. The next prime is 424131422389. The reversal of 424131422381 is 183224131424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291465015625 + 132666406756 = 539875^2 + 364234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424131422381 is a prime.

It is a super-2 number, since 2×424131422381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424131422389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212065711190 + 212065711191.

It is an arithmetic number, because the mean of its divisors is an integer number (212065711191).

Almost surely, 2^424131422381 is an apocalyptic number.

It is an amenable number.

424131422381 is a deficient number, since it is larger than the sum of its proper divisors (1).

424131422381 is an equidigital number, since it uses as much as digits as its factorization.

424131422381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The spelling of 424131422381 in words is "four hundred twenty-four billion, one hundred thirty-one million, four hundred twenty-two thousand, three hundred eighty-one".