231026 has 4 divisors (see below), whose sum is σ = 346542. Its totient is φ = 115512.

The previous prime is 231019. The next prime is 231031. The reversal of 231026 is 620132.

231026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 160801 + 70225 = 401^2 + 265^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 231026.

It is an unprimeable number.

231026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57755 + ... + 57758.

2²³¹⁰²⁶ is an apocalyptic number.

231026 is a deficient number, since it is larger than the sum of its proper divisors (115516).

231026 is a wasteful number, since it uses less digits than its factorization.

231026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115515.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231026 is about 480.6516410042. The cubic root of 231026 is about 61.3602263392.

Adding to 231026 its reverse (620132), we get a palindrome (851158).

The spelling of 231026 in words is "two hundred thirty-one thousand, twenty-six".