31452440300040 has 32 divisors (see below), whose sum is σ = 94357320900480. Its totient is φ = 8387317413312.

The previous prime is 31452440300023. The next prime is 31452440300051. The reversal of 31452440300040 is 4000304425413.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31452440299980 and 31452440300007.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 131051834464 + ... + 131051834703.

It is an arithmetic number, because the mean of its divisors is an integer number (2948666278140).

Almost surely, 2^{31452440300040} is an apocalyptic number.

31452440300040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31452440300040 is an abundant number, since it is smaller than the sum of its proper divisors (62904880600440).

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

31452440300040 is a wasteful number, since it uses less digits than its factorization.

31452440300040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262103669181 (or 262103669177 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 31452440300040 its reverse (4000304425413), we get a palindrome (35452744725453).

The spelling of 31452440300040 in words is "thirty-one trillion, four hundred fifty-two billion, four hundred forty million, three hundred thousand, forty".