1206550331 has 16 divisors (see below), whose sum is σ = 1469875200. Its totient is φ = 967344768.

The previous prime is 1206550327. The next prime is 1206550339. The reversal of 1206550331 is 1330556021.

It is a cyclic number.

It is not a de Polignac number, because 1206550331 - 2² = 1206550327 is a prime.

It is a super-2 number, since 2×1206550331² = 2911527402472419122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1206550331.

It is not an unprimeable number, because it can be changed into a prime (1206550339) 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, 46910 + ... + 67923.

It is an arithmetic number, because the mean of its divisors is an integer number (91867200).

Almost surely, 2^1206550331 is an apocalyptic number.

1206550331 is a deficient number, since it is larger than the sum of its proper divisors (263324869).

1206550331 is a wasteful number, since it uses less digits than its factorization.

1206550331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114938.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1206550331 is about 34735.4333642176. The cubic root of 1206550331 is about 1064.5886075914.

The spelling of 1206550331 in words is "one billion, two hundred six million, five hundred fifty thousand, three hundred thirty-one".