231213352 has 8 divisors (see below), whose sum is σ = 433525050. Its totient is φ = 115606672.

The previous prime is 231213247. The next prime is 231213361. The reversal of 231213352 is 253312132.

It can be written as a sum of positive squares in only one way, i.e., 210656196 + 20557156 = 14514^2 + 4534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×231213352² = 106919228286151808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450827 + ... + 14450842.

Almost surely, 2^231213352 is an apocalyptic number.

It is an amenable number.

231213352 is a deficient number, since it is larger than the sum of its proper divisors (202311698).

231213352 is a wasteful number, since it uses less digits than its factorization.

231213352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28901675 (or 28901671 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 231213352 is about 15205.7012991838. The cubic root of 231213352 is about 613.7680867903.

Adding to 231213352 its reverse (253312132), we get a palindrome (484525484).

The spelling of 231213352 in words is "two hundred thirty-one million, two hundred thirteen thousand, three hundred fifty-two".