1231020332010 has 256 divisors, whose sum is σ = 4016079360000. Its totient is φ = 262048276224.

The previous prime is 1231020331969. The next prime is 1231020332023. The reversal of 1231020332010 is 102330201321.

1231020332010 is a `hidden beast` number, since 1 + 2 + 310 + 20 + 3 + 320 + 10 = 666.

It is a super-2 number, since 2×1231020332010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 127 ways as a sum of consecutive naturals, for example, 1828176 + ... + 2409204.

It is an arithmetic number, because the mean of its divisors is an integer number (15687810000).

Almost surely, 2^{1231020332010} is an apocalyptic number.

1231020332010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231020332010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008039680000).

1231020332010 is an abundant number, since it is smaller than the sum of its proper divisors (2785059027990).

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

1231020332010 is a wasteful number, since it uses less digits than its factorization.

1231020332010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581130 (or 581124 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1231020332010 its reverse (102330201321), we get a palindrome (1333350533331).

The spelling of 1231020332010 in words is "one trillion, two hundred thirty-one billion, twenty million, three hundred thirty-two thousand, ten".