1236513012 has 24 divisors (see below), whose sum is σ = 3297368256. Its totient is φ = 353289408.

The previous prime is 1236513007. The next prime is 1236513013. The reversal of 1236513012 is 2103156321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236513013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7360113 + ... + 7360280.

It is an arithmetic number, because the mean of its divisors is an integer number (137390344).

Almost surely, 2^1236513012 is an apocalyptic number.

1236513012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1236513012 is an abundant number, since it is smaller than the sum of its proper divisors (2060855244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1236513012 is a wasteful number, since it uses less digits than its factorization.

1236513012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14720407 (or 14720405 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1236513012 is about 35164.0869638329. The cubic root of 1236513012 is about 1073.3290824088.

Adding to 1236513012 its reverse (2103156321), we get a palindrome (3339669333).

The spelling of 1236513012 in words is "one billion, two hundred thirty-six million, five hundred thirteen thousand, twelve".