1231303011330 has 64 divisors (see below), whose sum is σ = 3377933238528. Its totient is φ = 281386940160.

The previous prime is 1231303011311. The next prime is 1231303011359. The reversal of 1231303011330 is 331103031321.

It is a super-2 number, since 2×1231303011330² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1231303011297 and 1231303011306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547564 + ... + 1662056.

It is an arithmetic number, because the mean of its divisors is an integer number (52780206852).

Almost surely, 2^{1231303011330} is an apocalyptic number.

1231303011330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231303011330 is an abundant number, since it is smaller than the sum of its proper divisors (2146630227198).

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

1231303011330 is a wasteful number, since it uses less digits than its factorization.

1231303011330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119771.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 1231303011330 its reverse (331103031321), we get a palindrome (1562406042651).

The spelling of 1231303011330 in words is "one trillion, two hundred thirty-one billion, three hundred three million, eleven thousand, three hundred thirty".