303240140040 has 64 divisors (see below), whose sum is σ = 930876724800. Its totient is φ = 78983476992.

The previous prime is 303240140009. The next prime is 303240140041. The reversal of 303240140040 is 40041042303.

It is a super-2 number, since 2×303240140040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 303240139989 and 303240140016.

It is not an unprimeable number, because it can be changed into a prime (303240140041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29378575 + ... + 29388894.

It is an arithmetic number, because the mean of its divisors is an integer number (14544948825).

Almost surely, 2^303240140040 is an apocalyptic number.

303240140040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303240140040 is an abundant number, since it is smaller than the sum of its proper divisors (627636584760).

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

303240140040 is a wasteful number, since it uses less digits than its factorization.

303240140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58767526 (or 58767522 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 303240140040 its reverse (40041042303), we get a palindrome (343281182343).

The spelling of 303240140040 in words is "three hundred three billion, two hundred forty million, one hundred forty thousand, forty".