1231130203230 has 32 divisors (see below), whose sum is σ = 2955958846848. Its totient is φ = 328162903200.

The previous prime is 1231130203141. The next prime is 1231130203231. The reversal of 1231130203230 is 323020311321.

It is a super-2 number, since 2×1231130203230² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231130203197 and 1231130203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231130203231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8582956 + ... + 8725215.

It is an arithmetic number, because the mean of its divisors is an integer number (92373713964).

Almost surely, 2^{1231130203230} is an apocalyptic number.

1231130203230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231130203230 is an abundant number, since it is smaller than the sum of its proper divisors (1724828643618).

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

1231130203230 is a wasteful number, since it uses less digits than its factorization.

1231130203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17310552.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1231130203230 its reverse (323020311321), we get a palindrome (1554150514551).

The spelling of 1231130203230 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, two hundred three thousand, two hundred thirty".