1201608351 has 20 divisors (see below), whose sum is σ = 1821794392. Its totient is φ = 789112368.

The previous prime is 1201608323. The next prime is 1201608379. The reversal of 1201608351 is 1538061021.

1201608351 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 608 + 3 + 51 = 666.

It is an interprime number because it is at equal distance from previous prime (1201608323) and next prime (1201608379).

It is a de Polignac number, because none of the positive numbers 2^k-1201608351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201604351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105280 + ... + 116133.

Almost surely, 2^1201608351 is an apocalyptic number.

1201608351 is a deficient number, since it is larger than the sum of its proper divisors (620186041).

1201608351 is an equidigital number, since it uses as much as digits as its factorization.

1201608351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221492 (or 221483 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1201608351 is about 34664.2229250852. Note that the first 3 decimals coincide. The cubic root of 1201608351 is about 1063.1331150058.

Adding to 1201608351 its reverse (1538061021), we get a palindrome (2739669372).

The spelling of 1201608351 in words is "one billion, two hundred one million, six hundred eight thousand, three hundred fifty-one".