31132303040 has 56 divisors (see below), whose sum is σ = 76525233792. Its totient is φ = 12051210240.

The previous prime is 31132302991. The next prime is 31132303049. The reversal of 31132303040 is 4030323113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (31132303049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559249 + ... + 1579088.

It is an arithmetic number, because the mean of its divisors is an integer number (1366522032).

Almost surely, 2^31132303040 is an apocalyptic number.

It is an amenable number.

31132303040 is an abundant number, since it is smaller than the sum of its proper divisors (45392930752).

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

31132303040 is a wasteful number, since it uses less digits than its factorization.

31132303040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138385 (or 3138375 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31132303040 its reverse (4030323113), we get a palindrome (35162626153).

The spelling of 31132303040 in words is "thirty-one billion, one hundred thirty-two million, three hundred three thousand, forty".