1201240231 has 4 divisors (see below), whose sum is σ = 1202336352. Its totient is φ = 1200144112.

The previous prime is 1201240223. The next prime is 1201240237. The reversal of 1201240231 is 1320421021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320421021 = 83 ⋅15908687.

It is a cyclic number.

It is not a de Polignac number, because 1201240231 - 2³ = 1201240223 is a prime.

It is a super-2 number, since 2×1201240231² = 2885956185145866722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201240237) 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 3 ways as a sum of consecutive naturals, for example, 546415 + ... + 548608.

It is an arithmetic number, because the mean of its divisors is an integer number (300584088).

Almost surely, 2^1201240231 is an apocalyptic number.

1201240231 is a deficient number, since it is larger than the sum of its proper divisors (1096121).

1201240231 is a wasteful number, since it uses less digits than its factorization.

1201240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096120.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1201240231 is about 34658.9127209727. The cubic root of 1201240231 is about 1063.0245381598.

Adding to 1201240231 its reverse (1320421021), we get a palindrome (2521661252).

The spelling of 1201240231 in words is "one billion, two hundred one million, two hundred forty thousand, two hundred thirty-one".