16431077 has 4 divisors (see below), whose sum is σ = 17695020. Its totient is φ = 15167136.

The previous prime is 16431053. The next prime is 16431097. The reversal of 16431077 is 77013461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77013461 = 7 ⋅11001923.

It can be written as a sum of positive squares in 2 ways, for example, as 5134756 + 11296321 = 2266^2 + 3361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16431077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631952 + ... + 631977.

It is an arithmetic number, because the mean of its divisors is an integer number (4423755).

Almost surely, 2^16431077 is an apocalyptic number.

It is an amenable number.

16431077 is a deficient number, since it is larger than the sum of its proper divisors (1263943).

16431077 is a wasteful number, since it uses less digits than its factorization.

16431077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263942.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 16431077 is about 4053.5264893670. The cubic root of 16431077 is about 254.2271976707.

The spelling of 16431077 in words is "sixteen million, four hundred thirty-one thousand, seventy-seven".