1201523271 has 8 divisors (see below), whose sum is σ = 1725264240. Its totient is φ = 739398912.

The previous prime is 1201523231. The next prime is 1201523293. The reversal of 1201523271 is 1723251021.

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

It is not a de Polignac number, because 1201523271 - 2⁶ = 1201523207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201523221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15404106 + ... + 15404183.

It is an arithmetic number, because the mean of its divisors is an integer number (215658030).

Almost surely, 2^1201523271 is an apocalyptic number.

1201523271 is a deficient number, since it is larger than the sum of its proper divisors (523740969).

1201523271 is a wasteful number, since it uses less digits than its factorization.

1201523271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30808305.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1201523271 is about 34662.9957014682. The cubic root of 1201523271 is about 1063.1080226645.

Adding to 1201523271 its reverse (1723251021), we get a palindrome (2924774292).

The spelling of 1201523271 in words is "one billion, two hundred one million, five hundred twenty-three thousand, two hundred seventy-one".