31873422 has 24 divisors (see below), whose sum is σ = 74155176. Its totient is φ = 9106608.

The previous prime is 31873421. The next prime is 31873427. The reversal of 31873422 is 22437813.

It is a self number, because there is not a number n which added to its sum of digits gives 31873422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31873421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53913 + ... + 54500.

It is an arithmetic number, because the mean of its divisors is an integer number (3089799).

Almost surely, 2^31873422 is an apocalyptic number.

31873422 is an abundant number, since it is smaller than the sum of its proper divisors (42281754).

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

31873422 is a wasteful number, since it uses less digits than its factorization.

31873422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108432 (or 108425 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 31873422 is about 5645.6551435595. The cubic root of 31873422 is about 317.0610529675.

The spelling of 31873422 in words is "thirty-one million, eight hundred seventy-three thousand, four hundred twenty-two".