10421731 has 8 divisors (see below), whose sum is σ = 11105424. Its totient is φ = 9745920.

The previous prime is 10421713. The next prime is 10421779. The reversal of 10421731 is 13712401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10421731 is a prime.

It is a super-2 number, since 2×10421731² = 217224954072722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10421699 and 10421708.

It is not an unprimeable number, because it can be changed into a prime (10421711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (1388178).

Almost surely, 2^10421731 is an apocalyptic number.

10421731 is a deficient number, since it is larger than the sum of its proper divisors (683693).

10421731 is a wasteful number, since it uses less digits than its factorization.

10421731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3941.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 10421731 is about 3228.2705896501. The cubic root of 10421731 is about 218.4305032712.

The spelling of 10421731 in words is "ten million, four hundred twenty-one thousand, seven hundred thirty-one".