231367445 has 4 divisors (see below), whose sum is σ = 277640940. Its totient is φ = 185093952.

The previous prime is 231367421. The next prime is 231367447. The reversal of 231367445 is 544763132.

231367445 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 2 ways, for example, as 180015889 + 51351556 = 13417^2 + 7166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231367445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231367447) 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, 23136740 + ... + 23136749.

It is an arithmetic number, because the mean of its divisors is an integer number (69410235).

Almost surely, 2^231367445 is an apocalyptic number.

It is an amenable number.

231367445 is a deficient number, since it is larger than the sum of its proper divisors (46273495).

231367445 is an equidigital number, since it uses as much as digits as its factorization.

231367445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46273494.

The product of its digits is 60480, while the sum is 35.

The square root of 231367445 is about 15210.7674033890. The cubic root of 231367445 is about 613.9044058542.

The spelling of 231367445 in words is "two hundred thirty-one million, three hundred sixty-seven thousand, four hundred forty-five".