311178379 has 2 divisors, whose sum is σ = 311178380. Its totient is φ = 311178378.

The previous prime is 311178359. The next prime is 311178389. The reversal of 311178379 is 973871113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311178379 - 2¹⁷ = 311047307 is a prime.

It is equal to p_16824739 and since 311178379 and 16824739 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (311178359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155589189 + 155589190.

It is an arithmetic number, because the mean of its divisors is an integer number (155589190).

Almost surely, 2^311178379 is an apocalyptic number.

311178379 is a deficient number, since it is larger than the sum of its proper divisors (1).

311178379 is an equidigital number, since it uses as much as digits as its factorization.

311178379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 311178379 is about 17640.2488361134. The cubic root of 311178379 is about 677.6464040028.

The spelling of 311178379 in words is "three hundred eleven million, one hundred seventy-eight thousand, three hundred seventy-nine".