311402 has 32 divisors (see below), whose sum is σ = 604800. Its totient is φ = 116928.

The previous prime is 311393. The next prime is 311407. The reversal of 311402 is 204113.

It is a happy number.

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 311402.

It is not an unprimeable number, because it can be changed into a prime (311407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5249 + ... + 5307.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2³¹¹⁴⁰² is an apocalyptic number.

311402 is a deficient number, since it is larger than the sum of its proper divisors (293398).

311402 is a wasteful number, since it uses less digits than its factorization.

311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 311402 is about 558.0340491404. The cubic root of 311402 is about 67.7808690001.

Adding to 311402 its reverse (204113), we get a palindrome (515515).

The spelling of 311402 in words is "three hundred eleven thousand, four hundred two", and thus it is an iban number.