1202131265 has 8 divisors (see below), whose sum is σ = 1443332520. Its totient is φ = 961188352.

The previous prime is 1202131261. The next prime is 1202131283. The reversal of 1202131265 is 5621312021.

It can be written as a sum of positive squares in 4 ways, for example, as 272613121 + 929518144 = 16511^2 + 30488^2 .

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 1202131265 - 2² = 1202131261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202131265.

It is not an unprimeable number, because it can be changed into a prime (1202131261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54194 + ... + 73083.

It is an arithmetic number, because the mean of its divisors is an integer number (180416565).

Almost surely, 2^1202131265 is an apocalyptic number.

It is an amenable number.

1202131265 is a deficient number, since it is larger than the sum of its proper divisors (241201255).

1202131265 is a wasteful number, since it uses less digits than its factorization.

1202131265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129171.

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

The square root of 1202131265 is about 34671.7646652143. The cubic root of 1202131265 is about 1063.2873101632.

Adding to 1202131265 its reverse (5621312021), we get a palindrome (6823443286).

The spelling of 1202131265 in words is "one billion, two hundred two million, one hundred thirty-one thousand, two hundred sixty-five".