1231001020330 has 16 divisors (see below), whose sum is σ = 2269845784584. Its totient is φ = 480390641920.

The previous prime is 1231001020297. The next prime is 1231001020439. The reversal of 1231001020330 is 330201001321.

It can be written as a sum of positive squares in 4 ways, for example, as 738656021401 + 492344998929 = 859451^2 + 701673^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501220347 + ... + 1501221166.

Almost surely, 2^{1231001020330} is an apocalyptic number.

1231001020330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231001020330 is a deficient number, since it is larger than the sum of its proper divisors (1038844764254).

1231001020330 is a wasteful number, since it uses less digits than its factorization.

1231001020330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002441561.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1231001020330 its reverse (330201001321), we get a palindrome (1561202021651).

The spelling of 1231001020330 in words is "one trillion, two hundred thirty-one billion, one million, twenty thousand, three hundred thirty".