31163412 has 36 divisors (see below), whose sum is σ = 84588000. Its totient is φ = 8903664.

The previous prime is 31163393. The next prime is 31163423. The reversal of 31163412 is 21436113.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25912 + ... + 27087.

Almost surely, 2^31163412 is an apocalyptic number.

It is an amenable number.

31163412 is an abundant number, since it is smaller than the sum of its proper divisors (53424588).

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

31163412 is a wasteful number, since it uses less digits than its factorization.

31163412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53020 (or 53011 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 31163412 is about 5582.4199053815. The cubic root of 31163412 is about 314.6890759161.

Adding to 31163412 its reverse (21436113), we get a palindrome (52599525).

The spelling of 31163412 in words is "thirty-one million, one hundred sixty-three thousand, four hundred twelve".