1200531 has 16 divisors (see below), whose sum is σ = 1695744. Its totient is φ = 753984.

The previous prime is 1200527. The next prime is 1200581. The reversal of 1200531 is 1350021.

It is not a de Polignac number, because 1200531 - 2² = 1200527 is a prime.

It is a super-2 number, since 2×1200531² = 2882549363922, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8695 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (105984).

2^1200531 is an apocalyptic number.

1200531 is a deficient number, since it is larger than the sum of its proper divisors (495213).

1200531 is a wasteful number, since it uses less digits than its factorization.

1200531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1200531 is about 1095.6874554361. The cubic root of 1200531 is about 106.2815288208.

Adding to 1200531 its reverse (1350021), we get a palindrome (2550552).

The spelling of 1200531 in words is "one million, two hundred thousand, five hundred thirty-one".