1201342231 has 4 divisors (see below), whose sum is σ = 1226902752. Its totient is φ = 1175781712.

The previous prime is 1201342217. The next prime is 1201342243. The reversal of 1201342231 is 1322431021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201342231 - 2⁵ = 1201342199 is a prime.

It is a super-2 number, since 2×1201342231² = 2886446311968114722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201342199 and 1201342208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201345231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12780190 + ... + 12780283.

It is an arithmetic number, because the mean of its divisors is an integer number (306725688).

Almost surely, 2^1201342231 is an apocalyptic number.

1201342231 is a deficient number, since it is larger than the sum of its proper divisors (25560521).

1201342231 is an equidigital number, since it uses as much as digits as its factorization.

1201342231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25560520.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1201342231 is about 34660.3841727122. The cubic root of 1201342231 is about 1063.0546252402.

Adding to 1201342231 its reverse (1322431021), we get a palindrome (2523773252).

The spelling of 1201342231 in words is "one billion, two hundred one million, three hundred forty-two thousand, two hundred thirty-one".