1051666431 has 8 divisors (see below), whose sum is σ = 1402902144. Its totient is φ = 700770840.

The previous prime is 1051666409. The next prime is 1051666463. The reversal of 1051666431 is 1346661501.

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

It is not a de Polignac number, because 1051666431 - 2⁶ = 1051666367 is a prime.

It is a super-2 number, since 2×1051666431² = 2212004564184555522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051666392 and 1051666401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051666331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77725 + ... + 90246.

It is an arithmetic number, because the mean of its divisors is an integer number (175362768).

Almost surely, 2^1051666431 is an apocalyptic number.

1051666431 is a deficient number, since it is larger than the sum of its proper divisors (351235713).

1051666431 is a wasteful number, since it uses less digits than its factorization.

1051666431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170061.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1051666431 is about 32429.4068863431. The cubic root of 1051666431 is about 1016.9337724170.

The spelling of 1051666431 in words is "one billion, fifty-one million, six hundred sixty-six thousand, four hundred thirty-one".