235902213 has 14 divisors (see below), whose sum is σ = 353692614. Its totient is φ = 157267656.

The previous prime is 235902209. The next prime is 235902229. The reversal of 235902213 is 312209532.

It can be written as a sum of positive squares in only one way, i.e., 188870049 + 47032164 = 13743^2 + 6858^2 .

It is not a de Polignac number, because 235902213 - 2² = 235902209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235902203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 161070 + ... + 162527.

Almost surely, 2^235902213 is an apocalyptic number.

It is an amenable number.

235902213 is a deficient number, since it is larger than the sum of its proper divisors (117790401).

235902213 is an frugal number, since it uses more digits than its factorization.

235902213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323615 (or 323600 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 235902213 is about 15359.1084702205. The cubic root of 235902213 is about 617.8892958458.

The spelling of 235902213 in words is "two hundred thirty-five million, nine hundred two thousand, two hundred thirteen".