31230112 has 12 divisors (see below), whose sum is σ = 61484346. Its totient is φ = 15615040.

The previous prime is 31230079. The next prime is 31230163. The reversal of 31230112 is 21103213.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 7376656 = 4884^2 + 2716^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31230092 and 31230101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487939 + ... + 488002.

Almost surely, 2^31230112 is an apocalyptic number.

31230112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31230112 is a deficient number, since it is larger than the sum of its proper divisors (30254234).

31230112 is an equidigital number, since it uses as much as digits as its factorization.

31230112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975951 (or 975943 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 31230112 is about 5588.3908238419. The cubic root of 31230112 is about 314.9134288008.

Adding to 31230112 its reverse (21103213), we get a palindrome (52333325).

The spelling of 31230112 in words is "thirty-one million, two hundred thirty thousand, one hundred twelve".