1231110220330 has 32 divisors (see below), whose sum is σ = 2219999996160. Its totient is φ = 491555359680.

The previous prime is 1231110220297. The next prime is 1231110220357. The reversal of 1231110220330 is 330220111321.

It is a super-2 number, since 2×1231110220330² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231110220298 and 1231110220307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20195136 + ... + 20256004.

It is an arithmetic number, because the mean of its divisors is an integer number (69374999880).

Almost surely, 2^{1231110220330} is an apocalyptic number.

1231110220330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231110220330 is a deficient number, since it is larger than the sum of its proper divisors (988889775830).

1231110220330 is a wasteful number, since it uses less digits than its factorization.

1231110220330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64494.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1231110220330 its reverse (330220111321), we get a palindrome (1561330331651).

The spelling of 1231110220330 in words is "one trillion, two hundred thirty-one billion, one hundred ten million, two hundred twenty thousand, three hundred thirty".