1201231435 has 4 divisors (see below), whose sum is σ = 1441477728. Its totient is φ = 960985144.

The previous prime is 1201231399. The next prime is 1201231439. The reversal of 1201231435 is 5341321021.

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 1201231435 - 2⁹ = 1201230923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201231439) 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, 120123139 + ... + 120123148.

It is an arithmetic number, because the mean of its divisors is an integer number (360369432).

Almost surely, 2^1201231435 is an apocalyptic number.

1201231435 is a deficient number, since it is larger than the sum of its proper divisors (240246293).

1201231435 is an equidigital number, since it uses as much as digits as its factorization.

1201231435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240246292.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1201231435 is about 34658.7858269732. The cubic root of 1201231435 is about 1063.0219435119.

Adding to 1201231435 its reverse (5341321021), we get a palindrome (6542552456).

The spelling of 1201231435 in words is "one billion, two hundred one million, two hundred thirty-one thousand, four hundred thirty-five".