231356545 has 8 divisors (see below), whose sum is σ = 317289024. Its totient is φ = 158644464.

The previous prime is 231356507. The next prime is 231356579. The reversal of 231356545 is 545653132.

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 231356545 - 2¹³ = 231348353 is a prime.

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 231356545.

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, 3305059 + ... + 3305128.

It is an arithmetic number, because the mean of its divisors is an integer number (39661128).

Almost surely, 2^231356545 is an apocalyptic number.

It is an amenable number.

231356545 is a deficient number, since it is larger than the sum of its proper divisors (85932479).

231356545 is an equidigital number, since it uses as much as digits as its factorization.

231356545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6610199.

The product of its digits is 54000, while the sum is 34.

The square root of 231356545 is about 15210.4091003497. The cubic root of 231356545 is about 613.8947651099.

The spelling of 231356545 in words is "two hundred thirty-one million, three hundred fifty-six thousand, five hundred forty-five".