31012422 has 16 divisors (see below), whose sum is σ = 70885632. Its totient is φ = 8860680.

The previous prime is 31012411. The next prime is 31012439. The reversal of 31012422 is 22421013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369154 + ... + 369237.

It is an arithmetic number, because the mean of its divisors is an integer number (4430352).

Almost surely, 2^31012422 is an apocalyptic number.

31012422 is an abundant number, since it is smaller than the sum of its proper divisors (39873210).

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

31012422 is a wasteful number, since it uses less digits than its factorization.

31012422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738403.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31012422 is about 5568.8797796325. The cubic root of 31012422 is about 314.1800190235.

Adding to 31012422 its reverse (22421013), we get a palindrome (53433435).

The spelling of 31012422 in words is "thirty-one million, twelve thousand, four hundred twenty-two".