10621431 has 6 divisors (see below), whose sum is σ = 15342080. Its totient is φ = 7080948.

The previous prime is 10621411. The next prime is 10621439. The reversal of 10621431 is 13412601.

It is a happy number.

10621431 is a `hidden beast` number, since 1 + 0 + 621 + 43 + 1 = 666.

10621431 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10621431 - 2¹⁵ = 10588663 is a prime.

It is a super-2 number, since 2×10621431² = 225629592975522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10621439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 590071 + ... + 590088.

Almost surely, 2^10621431 is an apocalyptic number.

10621431 is a deficient number, since it is larger than the sum of its proper divisors (4720649).

10621431 is a wasteful number, since it uses less digits than its factorization.

10621431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180165 (or 1180162 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 10621431 is about 3259.0536970108. The cubic root of 10621431 is about 219.8168655021.

The spelling of 10621431 in words is "ten million, six hundred twenty-one thousand, four hundred thirty-one".