31040064 has 224 divisors, whose sum is σ = 105338880. Its totient is φ = 8870400.

The previous prime is 31040047. The next prime is 31040071. The reversal of 31040064 is 46004013.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 437149 + ... + 437219.

Almost surely, 2^31040064 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 31040064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52669440).

31040064 is an abundant number, since it is smaller than the sum of its proper divisors (74298816).

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

31040064 is a wasteful number, since it uses less digits than its factorization.

31040064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31040064 is about 5571.3610545360. The cubic root of 31040064 is about 314.2733363090.

Adding to 31040064 its reverse (46004013), we get a palindrome (77044077).

The spelling of 31040064 in words is "thirty-one million, forty thousand, sixty-four".