231026445 has 32 divisors (see below), whose sum is σ = 442310400. Its totient is φ = 113735232.

The previous prime is 231026423. The next prime is 231026473. The reversal of 231026445 is 544620132.

231026445 is a `hidden beast` number, since 2 + 3 + 10 + 2 + 644 + 5 = 666.

It is not a de Polignac number, because 231026445 - 2⁶ = 231026381 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 an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64065 + ... + 67574.

It is an arithmetic number, because the mean of its divisors is an integer number (13822200).

Almost surely, 2^231026445 is an apocalyptic number.

It is an amenable number.

231026445 is a deficient number, since it is larger than the sum of its proper divisors (211283955).

231026445 is a wasteful number, since it uses less digits than its factorization.

231026445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131666 (or 131660 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 231026445 is about 15199.5541053019. The cubic root of 231026445 is about 613.6026573630.

Adding to 231026445 its reverse (544620132), we get a palindrome (775646577).

The spelling of 231026445 in words is "two hundred thirty-one million, twenty-six thousand, four hundred forty-five".