231201045 has 12 divisors (see below), whose sum is σ = 400748556. Its totient is φ = 123307200.

The previous prime is 231201029. The next prime is 231201053. The reversal of 231201045 is 540102132.

It can be written as a sum of positive squares in 2 ways, for example, as 76422564 + 154778481 = 8742^2 + 12441^2 .

It is not a de Polignac number, because 231201045 - 2⁴ = 231201029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2568856 + ... + 2568945.

It is an arithmetic number, because the mean of its divisors is an integer number (33395713).

Almost surely, 2^231201045 is an apocalyptic number.

It is an amenable number.

231201045 is a deficient number, since it is larger than the sum of its proper divisors (169547511).

231201045 is a wasteful number, since it uses less digits than its factorization.

231201045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137812 (or 5137809 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 231201045 is about 15205.2966100632. The cubic root of 231201045 is about 613.7571967360.

Adding to 231201045 its reverse (540102132), we get a palindrome (771303177).

The spelling of 231201045 in words is "two hundred thirty-one million, two hundred one thousand, forty-five".