1201631045 has 8 divisors (see below), whose sum is σ = 1444189824. Its totient is φ = 959816464.

The previous prime is 1201631023. The next prime is 1201631047. The reversal of 1201631045 is 5401361021.

1201631045 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 1201631045 - 2¹⁸ = 1201368901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201631045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201631047) 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 7 ways as a sum of consecutive naturals, for example, 182489 + ... + 188958.

It is an arithmetic number, because the mean of its divisors is an integer number (180523728).

Almost surely, 2^1201631045 is an apocalyptic number.

It is an amenable number.

1201631045 is a deficient number, since it is larger than the sum of its proper divisors (242558779).

1201631045 is an equidigital number, since it uses as much as digits as its factorization.

1201631045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372099.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1201631045 is about 34664.5502639224. The cubic root of 1201631045 is about 1063.1398078662.

Adding to 1201631045 its reverse (5401361021), we get a palindrome (6602992066).

The spelling of 1201631045 in words is "one billion, two hundred one million, six hundred thirty-one thousand, forty-five".