311942377 has 4 divisors (see below), whose sum is σ = 314036100. Its totient is φ = 309848656.

The previous prime is 311942369. The next prime is 311942387. The reversal of 311942377 is 773249113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153660816 + 158281561 = 12396^2 + 12581^2 .

It is a cyclic number.

It is not a de Polignac number, because 311942377 - 2³ = 311942369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311942317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046638 + ... + 1046935.

It is an arithmetic number, because the mean of its divisors is an integer number (78509025).

Almost surely, 2^311942377 is an apocalyptic number.

It is an amenable number.

311942377 is a deficient number, since it is larger than the sum of its proper divisors (2093723).

311942377 is a wasteful number, since it uses less digits than its factorization.

311942377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093722.

The product of its digits is 31752, while the sum is 37.

The square root of 311942377 is about 17661.8905273473. The cubic root of 311942377 is about 678.2005313788.

The spelling of 311942377 in words is "three hundred eleven million, nine hundred forty-two thousand, three hundred seventy-seven".