2135251236 has 24 divisors (see below), whose sum is σ = 5244477280. Its totient is φ = 674289792.

The previous prime is 2135251193. The next prime is 2135251247. The reversal of 2135251236 is 6321525312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4682341 + ... + 4682796.

Almost surely, 2^2135251236 is an apocalyptic number.

It is an amenable number.

2135251236 is an abundant number, since it is smaller than the sum of its proper divisors (3109226044).

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

2135251236 is a wasteful number, since it uses less digits than its factorization.

2135251236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9365163 (or 9365161 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 2135251236 is about 46208.7787763321. The cubic root of 2135251236 is about 1287.7048378148.

Adding to 2135251236 its reverse (6321525312), we get a palindrome (8456776548).

The spelling of 2135251236 in words is "two billion, one hundred thirty-five million, two hundred fifty-one thousand, two hundred thirty-six".