231203242 has 4 divisors (see below), whose sum is σ = 346804866. Its totient is φ = 115601620.

The previous prime is 231203227. The next prime is 231203249. The reversal of 231203242 is 242302132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 193515921 + 37687321 = 13911^2 + 6139^2 .

It is a super-2 number, since 2×231203242² = 106909878222621128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231203249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57800809 + ... + 57800812.

Almost surely, 2^231203242 is an apocalyptic number.

231203242 is a deficient number, since it is larger than the sum of its proper divisors (115601624).

231203242 is a wasteful number, since it uses less digits than its factorization.

231203242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115601623.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 231203242 is about 15205.3688544540. The cubic root of 231203242 is about 613.7591408165.

Adding to 231203242 its reverse (242302132), we get a palindrome (473505374).

It can be divided in two parts, 23120 and 3242, that added together give a palindrome (26362).

The spelling of 231203242 in words is "two hundred thirty-one million, two hundred three thousand, two hundred forty-two".