31141212 has 48 divisors (see below), whose sum is σ = 77347872. Its totient is φ = 9717760.

The previous prime is 31141199. The next prime is 31141217. The reversal of 31141212 is 21214113.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31141191 and 31141200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59512 + ... + 60032.

It is an arithmetic number, because the mean of its divisors is an integer number (1611414).

Almost surely, 2^31141212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31141212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38673936).

31141212 is an abundant number, since it is smaller than the sum of its proper divisors (46206660).

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

31141212 is a wasteful number, since it uses less digits than its factorization.

31141212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 31141212 is about 5580.4311661376. The cubic root of 31141212 is about 314.6143327414.

Adding to 31141212 its reverse (21214113), we get a palindrome (52355325).

The spelling of 31141212 in words is "thirty-one million, one hundred forty-one thousand, two hundred twelve".