1016544431 has 4 divisors (see below), whose sum is σ = 1161765072. Its totient is φ = 871323792.

The previous prime is 1016544413. The next prime is 1016544437. The reversal of 1016544431 is 1344456101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344456101 = 17 ⋅79085653.

It is a cyclic number.

It is not a de Polignac number, because 1016544431 - 2²² = 1012350127 is a prime.

It is a super-2 number, since 2×1016544431² = 2066725160394227522, 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 = 1016544394 and 1016544403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016544437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72610310 + ... + 72610323.

It is an arithmetic number, because the mean of its divisors is an integer number (290441268).

Almost surely, 2^1016544431 is an apocalyptic number.

1016544431 is a deficient number, since it is larger than the sum of its proper divisors (145220641).

1016544431 is an equidigital number, since it uses as much as digits as its factorization.

1016544431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145220640.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1016544431 is about 31883.2939170344. The cubic root of 1016544431 is about 1005.4846736918.

The spelling of 1016544431 in words is "one billion, sixteen million, five hundred forty-four thousand, four hundred thirty-one".