313942 has 4 divisors (see below), whose sum is σ = 470916. Its totient is φ = 156970.

The previous prime is 313933. The next prime is 313949. The reversal of 313942 is 249313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249313 = 29 ⋅8597.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313949) by changing a digit.

313942 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, 78484 + ... + 78487.

It is an arithmetic number, because the mean of its divisors is an integer number (117729).

2³¹³⁹⁴² is an apocalyptic number.

313942 is a deficient number, since it is larger than the sum of its proper divisors (156974).

313942 is a wasteful number, since it uses less digits than its factorization.

313942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156973.

The product of its digits is 648, while the sum is 22.

The square root of 313942 is about 560.3052739356. The cubic root of 313942 is about 67.9646586827.

The spelling of 313942 in words is "three hundred thirteen thousand, nine hundred forty-two".