31305135232050 has 48 divisors (see below), whose sum is σ = 77821145830272. Its totient is φ = 8328206980800.

The previous prime is 31305135231947. The next prime is 31305135232079. The reversal of 31305135232050 is 5023253150313.

It is a super-2 number, since 2×31305135232050² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247800154 + ... + 247926453.

It is an arithmetic number, because the mean of its divisors is an integer number (1621273871464).

Almost surely, 2^{31305135232050} is an apocalyptic number.

31305135232050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31305135232050 is an abundant number, since it is smaller than the sum of its proper divisors (46516010598222).

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

31305135232050 is a wasteful number, since it uses less digits than its factorization.

31305135232050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495727043 (or 495727038 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

Adding to 31305135232050 its reverse (5023253150313), we get a palindrome (36328388382363).

The spelling of 31305135232050 in words is "thirty-one trillion, three hundred five billion, one hundred thirty-five million, two hundred thirty-two thousand, fifty".