16431056 has 10 divisors (see below), whose sum is σ = 31835202. Its totient is φ = 8215520.

The previous prime is 16431053. The next prime is 16431097. The reversal of 16431056 is 65013461.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 1345600 = 3884^2 + 1160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513455 + ... + 513486.

Almost surely, 2^16431056 is an apocalyptic number.

16431056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16431056 is a deficient number, since it is larger than the sum of its proper divisors (15404146).

16431056 is a wasteful number, since it uses less digits than its factorization.

16431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026949 (or 1026943 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 16431056 is about 4053.5238990291. The cubic root of 16431056 is about 254.2270893642.

The spelling of 16431056 in words is "sixteen million, four hundred thirty-one thousand, fifty-six".