31230126 has 48 divisors (see below), whose sum is σ = 69951024. Its totient is φ = 10063872.

The previous prime is 31230079. The next prime is 31230163. The reversal of 31230126 is 62103213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31230099 and 31230108.

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 23 ways as a sum of consecutive naturals, for example, 121390 + ... + 121646.

It is an arithmetic number, because the mean of its divisors is an integer number (1457313).

Almost surely, 2^31230126 is an apocalyptic number.

31230126 is an abundant number, since it is smaller than the sum of its proper divisors (38720898).

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

31230126 is a wasteful number, since it uses less digits than its factorization.

31230126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 31230126 is about 5588.3920764384. The cubic root of 31230126 is about 314.9134758578.

Adding to 31230126 its reverse (62103213), we get a palindrome (93333339).

The spelling of 31230126 in words is "thirty-one million, two hundred thirty thousand, one hundred twenty-six".