1201303311 has 16 divisors (see below), whose sum is σ = 1735286784. Its totient is φ = 734832864.

The previous prime is 1201303303. The next prime is 1201303333. The reversal of 1201303311 is 1133031021.

It is not a de Polignac number, because 1201303311 - 2³ = 1201303303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201303211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85711 + ... + 98736.

It is an arithmetic number, because the mean of its divisors is an integer number (108455424).

Almost surely, 2^1201303311 is an apocalyptic number.

1201303311 is a deficient number, since it is larger than the sum of its proper divisors (533983473).

1201303311 is a wasteful number, since it uses less digits than its factorization.

1201303311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184630.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1201303311 is about 34659.8227202621. The cubic root of 1201303311 is about 1063.0431451552.

Adding to 1201303311 its reverse (1133031021), we get a palindrome (2334334332).

The spelling of 1201303311 in words is "one billion, two hundred one million, three hundred three thousand, three hundred eleven".