311201201011 has 4 divisors (see below), whose sum is σ = 315140456800. Its totient is φ = 307261945224.

The previous prime is 311201201009. The next prime is 311201201041. The reversal of 311201201011 is 110102102113.

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 311201201011 - 2¹ = 311201201009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311201200982 and 311201201000.

It is not an unprimeable number, because it can be changed into a prime (311201201041) 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, 1969627776 + ... + 1969627933.

It is an arithmetic number, because the mean of its divisors is an integer number (78785114200).

Almost surely, 2^311201201011 is an apocalyptic number.

311201201011 is a deficient number, since it is larger than the sum of its proper divisors (3939255789).

311201201011 is an equidigital number, since it uses as much as digits as its factorization.

311201201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939255788.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 311201201011 its reverse (110102102113), we get a palindrome (421303303124).

The spelling of 311201201011 in words is "three hundred eleven billion, two hundred one million, two hundred one thousand, eleven".