1231120323030 has 64 divisors (see below), whose sum is σ = 3184301611008. Its totient is φ = 302823185280.

The previous prime is 1231120323023. The next prime is 1231120323049. The reversal of 1231120323030 is 303230211321.

It is a junction number, because it is equal to n+sod(n) for n = 1231120322988 and 1231120323006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621486 + ... + 1687745.

It is an arithmetic number, because the mean of its divisors is an integer number (49754712672).

Almost surely, 2^{1231120323030} is an apocalyptic number.

1231120323030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231120323030 is an abundant number, since it is smaller than the sum of its proper divisors (1953181287978).

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

1231120323030 is a wasteful number, since it uses less digits than its factorization.

1231120323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310621.

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

Adding to 1231120323030 its reverse (303230211321), we get a palindrome (1534350534351).

The spelling of 1231120323030 in words is "one trillion, two hundred thirty-one billion, one hundred twenty million, three hundred twenty-three thousand, thirty".