311407 has 2 divisors, whose sum is σ = 311408. Its totient is φ = 311406.

The previous prime is 311393. The next prime is 311419. The reversal of 311407 is 704113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311407 - 2⁷ = 311279 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 311407.

It is not a weakly prime, because it can be changed into another prime (311447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155703 + 155704.

It is an arithmetic number, because the mean of its divisors is an integer number (155704).

2³¹¹⁴⁰⁷ is an apocalyptic number.

311407 is a deficient number, since it is larger than the sum of its proper divisors (1).

311407 is an equidigital number, since it uses as much as digits as its factorization.

311407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 311407 is about 558.0385291358. The cubic root of 311407 is about 67.7812317708.

The spelling of 311407 in words is "three hundred eleven thousand, four hundred seven", and thus it is an iban number.