1201203331 has 4 divisors (see below), whose sum is σ = 1201774464. Its totient is φ = 1200632200.

The previous prime is 1201203317. The next prime is 1201203343. The reversal of 1201203331 is 1333021021.

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 1201203331 - 2²¹ = 1199106179 is a prime.

It is a super-2 number, since 2×1201203331² = 2885778884810991122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201203301) 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, 282400 + ... + 286621.

It is an arithmetic number, because the mean of its divisors is an integer number (300443616).

Almost surely, 2^1201203331 is an apocalyptic number.

1201203331 is a deficient number, since it is larger than the sum of its proper divisors (571133).

1201203331 is an equidigital number, since it uses as much as digits as its factorization.

1201203331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571132.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1201203331 is about 34658.3803862789. The cubic root of 1201203331 is about 1063.0136532965.

Adding to 1201203331 its reverse (1333021021), we get a palindrome (2534224352).

The spelling of 1201203331 in words is "one billion, two hundred one million, two hundred three thousand, three hundred thirty-one".