31415648 has 48 divisors (see below), whose sum is σ = 69672960. Its totient is φ = 13814400.

The previous prime is 31415641. The next prime is 31415663. The reversal of 31415648 is 84651413.

It is a super-3 number, since 3×31415648³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31415641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9473 + ... + 12351.

It is an arithmetic number, because the mean of its divisors is an integer number (1451520).

Almost surely, 2^31415648 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 31415648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34836480).

31415648 is an abundant number, since it is smaller than the sum of its proper divisors (38257312).

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

31415648 is a wasteful number, since it uses less digits than its factorization.

31415648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2923 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 31415648 is about 5604.9663692122. The cubic root of 31415648 is about 315.5358244035.

The spelling of 31415648 in words is "thirty-one million, four hundred fifteen thousand, six hundred forty-eight".