20133231330 has 32 divisors (see below), whose sum is σ = 49040950464. Its totient is φ = 5288728896.

The previous prime is 20133231301. The next prime is 20133231337. The reversal of 20133231330 is 3313233102.

It is a junction number, because it is equal to n+sod(n) for n = 20133231297 and 20133231306.

It is not an unprimeable number, because it can be changed into a prime (20133231337) 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, 5006257 + ... + 5010276.

It is an arithmetic number, because the mean of its divisors is an integer number (1532529702).

Almost surely, 2^20133231330 is an apocalyptic number.

20133231330 is an abundant number, since it is smaller than the sum of its proper divisors (28907719134).

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

20133231330 is a wasteful number, since it uses less digits than its factorization.

20133231330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016610.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20133231330 its reverse (3313233102), we get a palindrome (23446464432).

The spelling of 20133231330 in words is "twenty billion, one hundred thirty-three million, two hundred thirty-one thousand, three hundred thirty".