1236013 has 4 divisors (see below), whose sum is σ = 1259388. Its totient is φ = 1212640.

The previous prime is 1235999. The next prime is 1236017. The reversal of 1236013 is 3106321.

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 736164 + 499849 = 858^2 + 707^2 .

It is not a de Polignac number, because 1236013 - 2⁵ = 1235981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11608 + ... + 11713.

It is an arithmetic number, because the mean of its divisors is an integer number (314847).

2^1236013 is an apocalyptic number.

It is an amenable number.

1236013 is a deficient number, since it is larger than the sum of its proper divisors (23375).

1236013 is an equidigital number, since it uses as much as digits as its factorization.

1236013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1236013 is about 1111.7612153696. The cubic root of 1236013 is about 107.3184387941.

The spelling of 1236013 in words is "one million, two hundred thirty-six thousand, thirteen".