1201313536 has 18 divisors (see below), whose sum is σ = 2397934952. Its totient is φ = 600656640.

The previous prime is 1201313527. The next prime is 1201313537. The reversal of 1201313536 is 6353131021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201313536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201313537) 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 as a sum of consecutive naturals, namely, 2346060 + ... + 2346571.

Almost surely, 2^1201313536 is an apocalyptic number.

1201313536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1201313536 is a deficient number, since it is larger than the sum of its proper divisors (1196621416).

1201313536 is an frugal number, since it uses more digits than its factorization.

1201313536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692647 (or 4692633 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1201313536 is about 34659.9702250305. The cubic root of 1201313536 is about 1063.0461612087.

Adding to 1201313536 its reverse (6353131021), we get a palindrome (7554444557).

The spelling of 1201313536 in words is "one billion, two hundred one million, three hundred thirteen thousand, five hundred thirty-six".