1235155213 has 16 divisors (see below), whose sum is σ = 1320568704. Its totient is φ = 1151216640.

The previous prime is 1235155199. The next prime is 1235155237. The reversal of 1235155213 is 3125515321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235155213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235155613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956098 + ... + 957388.

It is an arithmetic number, because the mean of its divisors is an integer number (82535544).

Almost surely, 2^1235155213 is an apocalyptic number.

It is an amenable number.

1235155213 is a deficient number, since it is larger than the sum of its proper divisors (85413491).

1235155213 is a wasteful number, since it uses less digits than its factorization.

1235155213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812.

The product of its digits is 4500, while the sum is 28.

The square root of 1235155213 is about 35144.7750455171. The cubic root of 1235155213 is about 1072.9360689092.

The spelling of 1235155213 in words is "one billion, two hundred thirty-five million, one hundred fifty-five thousand, two hundred thirteen".