31486422 has 32 divisors (see below), whose sum is σ = 68935680. Its totient is φ = 9508320.

The previous prime is 31486417. The next prime is 31486423. The reversal of 31486422 is 22468413.

It is a self number, because there is not a number n which added to its sum of digits gives 31486422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31486423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23979 + ... + 25257.

It is an arithmetic number, because the mean of its divisors is an integer number (2154240).

Almost surely, 2^31486422 is an apocalyptic number.

31486422 is an abundant number, since it is smaller than the sum of its proper divisors (37449258).

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

31486422 is a wasteful number, since it uses less digits than its factorization.

31486422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its digits is 9216, while the sum is 30.

The square root of 31486422 is about 5611.2763254005. The cubic root of 31486422 is about 315.7725958319.

Subtracting from 31486422 its reverse (22468413), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 314 and 86422, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 31486422 in words is "thirty-one million, four hundred eighty-six thousand, four hundred twenty-two".