31063480 has 64 divisors (see below), whose sum is σ = 84096000. Its totient is φ = 10088064.

The previous prime is 31063477. The next prime is 31063489. The reversal of 31063480 is 8436013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31063489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401 + ... + 8239.

It is an arithmetic number, because the mean of its divisors is an integer number (1314000).

Almost surely, 2^31063480 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 31063480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42048000).

31063480 is an abundant number, since it is smaller than the sum of its proper divisors (53032520).

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

31063480 is a wasteful number, since it uses less digits than its factorization.

31063480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876 (or 5872 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 31063480 is about 5573.4621197241. The cubic root of 31063480 is about 314.3523436066.

Adding to 31063480 its reverse (8436013), we get a palindrome (39499493).

The spelling of 31063480 in words is "thirty-one million, sixty-three thousand, four hundred eighty".