31424212 has 6 divisors (see below), whose sum is σ = 54992378. Its totient is φ = 15712104.

The previous prime is 31424207. The next prime is 31424221. The reversal of 31424212 is 21242413.

It can be written as a sum of positive squares in only one way, i.e., 19061956 + 12362256 = 4366^2 + 3516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31424212.

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, 3928023 + ... + 3928030.

Almost surely, 2^31424212 is an apocalyptic number.

It is an amenable number.

31424212 is a deficient number, since it is larger than the sum of its proper divisors (23568166).

31424212 is a wasteful number, since it uses less digits than its factorization.

31424212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856057 (or 7856055 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 31424212 is about 5605.7302824877. The cubic root of 31424212 is about 315.5644938030.

Adding to 31424212 its reverse (21242413), we get a palindrome (52666625).

The spelling of 31424212 in words is "thirty-one million, four hundred twenty-four thousand, two hundred twelve".