31342 has 4 divisors (see below), whose sum is σ = 47016. Its totient is φ = 15670.

The previous prime is 31337. The next prime is 31357. The reversal of 31342 is 24313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24313 = 41 ⋅593.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7834 + ... + 7837.

It is an arithmetic number, because the mean of its divisors is an integer number (11754).

2³¹³⁴² is an apocalyptic number.

31342 is a deficient number, since it is larger than the sum of its proper divisors (15674).

31342 is a wasteful number, since it uses less digits than its factorization.

31342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15673.

The product of its digits is 72, while the sum is 13.

The square root of 31342 is about 177.0367193551. The cubic root of 31342 is about 31.5289060269.

Subtracting from 31342 its sum of digits (13), we obtain a square (31329 = 177²).

Adding to 31342 its reverse (24313), we get a palindrome (55655).

It can be divided in two parts, 3134 and 2, that added together give a square (3136 = 56²).

The spelling of 31342 in words is "thirty-one thousand, three hundred forty-two".