231133030220220 has 48 divisors (see below), whose sum is σ = 681234194336640. Its totient is φ = 58391502371136.

The previous prime is 231133030220203. The next prime is 231133030220231. The reversal of 231133030220220 is 22022030331132.

It is a super-2 number, since 2×231133030220220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 101374134922 + ... + 101374137201.

It is an arithmetic number, because the mean of its divisors is an integer number (14192379048680).

Almost surely, 2^{231133030220220} is an apocalyptic number.

231133030220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231133030220220 is an abundant number, since it is smaller than the sum of its proper divisors (450101164116420).

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

231133030220220 is a wasteful number, since it uses less digits than its factorization.

231133030220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202748272154 (or 202748272152 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 231133030220220 its reverse (22022030331132), we get a palindrome (253155060551352).

The spelling of 231133030220220 in words is "two hundred thirty-one trillion, one hundred thirty-three billion, thirty million, two hundred twenty thousand, two hundred twenty".