1213135 has 32 divisors (see below), whose sum is σ = 1907712. Its totient is φ = 718080.

The previous prime is 1213133. The next prime is 1213141. The reversal of 1213135 is 5313121.

It is not a de Polignac number, because 1213135 - 2¹ = 1213133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8787 + ... + 8923.

It is an arithmetic number, because the mean of its divisors is an integer number (59616).

2^1213135 is an apocalyptic number.

1213135 is a deficient number, since it is larger than the sum of its proper divisors (694577).

1213135 is a wasteful number, since it uses less digits than its factorization.

1213135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183.

The product of its digits is 90, while the sum is 16.

The square root of 1213135 is about 1101.4240781824. The cubic root of 1213135 is about 106.6521735951.

Adding to 1213135 its reverse (5313121), we get a palindrome (6526256).

The spelling of 1213135 in words is "one million, two hundred thirteen thousand, one hundred thirty-five".