231500036 has 12 divisors (see below), whose sum is σ = 409677660. Its totient is φ = 114449280.

The previous prime is 231500029. The next prime is 231500039. The reversal of 231500036 is 630005132.

It can be written as a sum of positive squares in 2 ways, for example, as 30030400 + 201469636 = 5480^2 + 14194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231499990 and 231500017.

It is not an unprimeable number, because it can be changed into a prime (231500039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324785 + ... + 325496.

It is an arithmetic number, because the mean of its divisors is an integer number (34139805).

Almost surely, 2^231500036 is an apocalyptic number.

It is an amenable number.

231500036 is a deficient number, since it is larger than the sum of its proper divisors (178177624).

231500036 is a wasteful number, since it uses less digits than its factorization.

231500036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650374 (or 650372 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231500036 is about 15215.1252377363. The cubic root of 231500036 is about 614.0216546385.

Adding to 231500036 its reverse (630005132), we get a palindrome (861505168).

The spelling of 231500036 in words is "two hundred thirty-one million, five hundred thousand, thirty-six".