31206 has 16 divisors (see below), whose sum is σ = 71424. Its totient is φ = 8904.

The previous prime is 31193. The next prime is 31219. The reversal of 31206 is 60213.

It is an interprime number because it is at equal distance from previous prime (31193) and next prime (31219).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 31191 and 31200.

It is a congruent number.

It is an unprimeable number.

31206 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 in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (4464).

2³¹²⁰⁶ is an apocalyptic number.

31206 is an abundant number, since it is smaller than the sum of its proper divisors (40218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35712).

31206 is a wasteful number, since it uses less digits than its factorization.

31206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 31206 is about 176.6522006656. The cubic root of 31206 is about 31.4832362301.

Adding to 31206 its reverse (60213), we get a palindrome (91419).

The spelling of 31206 in words is "thirty-one thousand, two hundred six".