10421005631 has 2 divisors, whose sum is σ = 10421005632. Its totient is φ = 10421005630.

The previous prime is 10421005619. The next prime is 10421005681. The reversal of 10421005631 is 13650012401.

It is a weak prime.

It is an emirp because it is prime and its reverse (13650012401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10421005631 is a prime.

It is a super-2 number, since 2×10421005631² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 10421005597 and 10421005606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10421005681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210502815 + 5210502816.

It is an arithmetic number, because the mean of its divisors is an integer number (5210502816).

Almost surely, 2^10421005631 is an apocalyptic number.

10421005631 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421005631 is an equidigital number, since it uses as much as digits as its factorization.

10421005631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 10421005631 in words is "ten billion, four hundred twenty-one million, five thousand, six hundred thirty-one".