311382972309 has 8 divisors (see below), whose sum is σ = 415181741760. Its totient is φ = 207586425536.

The previous prime is 311382972203. The next prime is 311382972311. The reversal of 311382972309 is 903279283113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311382972309 - 2¹⁵ = 311382939541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311382972379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195417 + ... + 812990.

It is an arithmetic number, because the mean of its divisors is an integer number (51897717720).

Almost surely, 2^311382972309 is an apocalyptic number.

It is an amenable number.

311382972309 is a deficient number, since it is larger than the sum of its proper divisors (103798769451).

311382972309 is a wasteful number, since it uses less digits than its factorization.

311382972309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111339.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 311382972309 in words is "three hundred eleven billion, three hundred eighty-two million, nine hundred seventy-two thousand, three hundred nine".