311672 has 8 divisors (see below), whose sum is σ = 584400. Its totient is φ = 155832.

The previous prime is 311659. The next prime is 311677. The reversal of 311672 is 276113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311677) by changing a digit.

311672 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19472 + ... + 19487.

It is an arithmetic number, because the mean of its divisors is an integer number (73050).

2³¹¹⁶⁷² is an apocalyptic number.

It is an amenable number.

311672 is a deficient number, since it is larger than the sum of its proper divisors (272728).

311672 is a wasteful number, since it uses less digits than its factorization.

311672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38965 (or 38961 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 311672 is about 558.2759174458. The cubic root of 311672 is about 67.8004530618.

Adding to 311672 its reverse (276113), we get a palindrome (587785).

The spelling of 311672 in words is "three hundred eleven thousand, six hundred seventy-two".