231545435103220 has 96 divisors (see below), whose sum is σ = 568639167199488. Its totient is φ = 77539889129472.

The previous prime is 231545435103211. The next prime is 231545435103221. The reversal of 231545435103220 is 22301534545132.

It is a super-2 number, since 2×231545435103220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545435103221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689585694 + ... + 689921386.

It is an arithmetic number, because the mean of its divisors is an integer number (5923324658328).

Almost surely, 2^{231545435103220} is an apocalyptic number.

231545435103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231545435103220 is an abundant number, since it is smaller than the sum of its proper divisors (337093732096268).

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

231545435103220 is a wasteful number, since it uses less digits than its factorization.

231545435103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450329 (or 450327 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 231545435103220 its reverse (22301534545132), we get a palindrome (253846969648352).

The spelling of 231545435103220 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-five million, one hundred three thousand, two hundred twenty".