231201231302100 has 144 divisors (see below), whose sum is σ = 679004664406208. Its totient is φ = 60726460354560.

The previous prime is 231201231302087. The next prime is 231201231302117. The reversal of 231201231302100 is 1203132102132.

It is a super-2 number, since 2×231201231302100² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174955434 + ... + 176271966.

Almost surely, 2^{231201231302100} is an apocalyptic number.

231201231302100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231201231302100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339502332203104).

231201231302100 is an abundant number, since it is smaller than the sum of its proper divisors (447803433104108).

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

231201231302100 is a wasteful number, since it uses less digits than its factorization.

231201231302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325354 (or 1325347 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231201231302100 its reverse (1203132102132), we get a palindrome (232404363404232).

The spelling of 231201231302100 in words is "two hundred thirty-one trillion, two hundred one billion, two hundred thirty-one million, three hundred two thousand, one hundred".