231323045 has 8 divisors (see below), whose sum is σ = 279027096. Its totient is φ = 184098816.

The previous prime is 231323021. The next prime is 231323069. The reversal of 231323045 is 540323132.

It is an interprime number because it is at equal distance from previous prime (231323021) and next prime (231323069).

It can be written as a sum of positive squares in 4 ways, for example, as 829921 + 230493124 = 911^2 + 15182^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231323045 - 2¹⁴ = 231306661 is a prime.

It is a super-2 number, since 2×231323045² = 107020702296144050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231323045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118892 + ... + 120821.

It is an arithmetic number, because the mean of its divisors is an integer number (34878387).

Almost surely, 2^231323045 is an apocalyptic number.

It is an amenable number.

231323045 is a deficient number, since it is larger than the sum of its proper divisors (47704051).

231323045 is a wasteful number, since it uses less digits than its factorization.

231323045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239911.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 231323045 is about 15209.3078409243. The cubic root of 231323045 is about 613.8651334040.

Adding to 231323045 its reverse (540323132), we get a palindrome (771646177).

The spelling of 231323045 in words is "two hundred thirty-one million, three hundred twenty-three thousand, forty-five".