311972041 has 4 divisors (see below), whose sum is σ = 318609792. Its totient is φ = 305334292.

The previous prime is 311972029. The next prime is 311972047. The reversal of 311972041 is 140279113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140279113 = 13 ⋅10790701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311972041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311972047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318805 + ... + 3318898.

It is an arithmetic number, because the mean of its divisors is an integer number (79652448).

Almost surely, 2^311972041 is an apocalyptic number.

It is an amenable number.

311972041 is a deficient number, since it is larger than the sum of its proper divisors (6637751).

311972041 is an equidigital number, since it uses as much as digits as its factorization.

311972041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637750.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 311972041 is about 17662.7302815844. The cubic root of 311972041 is about 678.2220284077. Note that the first 3 decimals are identical.

The spelling of 311972041 in words is "three hundred eleven million, nine hundred seventy-two thousand, forty-one".