1200664531 has 8 divisors (see below), whose sum is σ = 1310088384. Its totient is φ = 1091286120.

The previous prime is 1200664529. The next prime is 1200664537. The reversal of 1200664531 is 1354660021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200664531 - 2¹ = 1200664529 is a prime.

It is a super-2 number, since 2×1200664531² = 2883190632002899922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200664531.

It is not an unprimeable number, because it can be changed into a prime (1200664537) 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 7 ways as a sum of consecutive naturals, for example, 68076 + ... + 83878.

It is an arithmetic number, because the mean of its divisors is an integer number (163761048).

Almost surely, 2^1200664531 is an apocalyptic number.

1200664531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200664531 is a deficient number, since it is larger than the sum of its proper divisors (109423853).

1200664531 is a wasteful number, since it uses less digits than its factorization.

1200664531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1200664531 is about 34650.6065026285. The cubic root of 1200664531 is about 1062.8546911961.

The spelling of 1200664531 in words is "one billion, two hundred million, six hundred sixty-four thousand, five hundred thirty-one".