1201110331 has 4 divisors (see below), whose sum is σ = 1201394152. Its totient is φ = 1200826512.

The previous prime is 1201110329. The next prime is 1201110341. The reversal of 1201110331 is 1330111021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330111021 = 18917 ⋅70313.

It is a cyclic number.

It is not a de Polignac number, because 1201110331 - 2¹ = 1201110329 is a prime.

It is a super-2 number, since 2×1201110331² = 2885332054469859122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201110341) 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, 135465 + ... + 144058.

It is an arithmetic number, because the mean of its divisors is an integer number (300348538).

Almost surely, 2^1201110331 is an apocalyptic number.

1201110331 is a deficient number, since it is larger than the sum of its proper divisors (283821).

1201110331 is an equidigital number, since it uses as much as digits as its factorization.

1201110331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283820.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1201110331 is about 34657.0386934602. The cubic root of 1201110331 is about 1062.9862189123.

Adding to 1201110331 its reverse (1330111021), we get a palindrome (2531221352).

The spelling of 1201110331 in words is "one billion, two hundred one million, one hundred ten thousand, three hundred thirty-one".