31126480 has 160 divisors (see below), whose sum is σ = 93708288. Its totient is φ = 9331200.

The previous prime is 31126457. The next prime is 31126559. The reversal of 31126480 is 8462113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190879 + ... + 191041.

Almost surely, 2^31126480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31126480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46854144).

31126480 is an abundant number, since it is smaller than the sum of its proper divisors (62581808).

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

31126480 is a wasteful number, since it uses less digits than its factorization.

31126480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 31126480 is about 5579.1110403002. Note that the first 3 decimals coincide. The cubic root of 31126480 is about 314.5647132915.

Adding to 31126480 its reverse (8462113), we get a palindrome (39588593).

The spelling of 31126480 in words is "thirty-one million, one hundred twenty-six thousand, four hundred eighty".