1201031345 has 4 divisors (see below), whose sum is σ = 1441237620. Its totient is φ = 960825072.

The previous prime is 1201031339. The next prime is 1201031371. The reversal of 1201031345 is 5431301021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 274498624 + 926532721 = 16568^2 + 30439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201031345 - 2¹² = 1201027249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120103130 + ... + 120103139.

It is an arithmetic number, because the mean of its divisors is an integer number (360309405).

Almost surely, 2^1201031345 is an apocalyptic number.

It is an amenable number.

1201031345 is a deficient number, since it is larger than the sum of its proper divisors (240206275).

1201031345 is an equidigital number, since it uses as much as digits as its factorization.

1201031345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240206274.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1201031345 is about 34655.8991370878. The cubic root of 1201031345 is about 1062.9629174531.

Adding to 1201031345 its reverse (5431301021), we get a palindrome (6632332366).

The spelling of 1201031345 in words is "one billion, two hundred one million, thirty-one thousand, three hundred forty-five".