31413888 has 192 divisors, whose sum is σ = 102791520. Its totient is φ = 9123840.

The previous prime is 31413857. The next prime is 31413911. The reversal of 31413888 is 88831413.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 468831 + ... + 468897.

Almost surely, 2^31413888 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 31413888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51395760).

31413888 is an abundant number, since it is smaller than the sum of its proper divisors (71377632).

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

31413888 is a wasteful number, since it uses less digits than its factorization.

31413888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 120 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 31413888 is about 5604.8093633950. The cubic root of 31413888 is about 315.5299318684.

The spelling of 31413888 in words is "thirty-one million, four hundred thirteen thousand, eight hundred eighty-eight".