1208720231 has 8 divisors (see below), whose sum is σ = 1219142400. Its totient is φ = 1198323000.

The previous prime is 1208720209. The next prime is 1208720237. The reversal of 1208720231 is 1320278021.

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 1208720231 - 2⁶ = 1208720167 is a prime.

It is a super-2 number, since 2×1208720231² = 2922009193657386722, 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 1208720231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208720237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98600 + ... + 110178.

It is an arithmetic number, because the mean of its divisors is an integer number (152392800).

Almost surely, 2^1208720231 is an apocalyptic number.

1208720231 is a deficient number, since it is larger than the sum of its proper divisors (10422169).

1208720231 is a wasteful number, since it uses less digits than its factorization.

1208720231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1208720231 is about 34766.6540092658. The cubic root of 1208720231 is about 1065.2264225028.

Adding to 1208720231 its reverse (1320278021), we get a palindrome (2528998252).

The spelling of 1208720231 in words is "one billion, two hundred eight million, seven hundred twenty thousand, two hundred thirty-one".