1231120300030 has 32 divisors (see below), whose sum is σ = 2224122743808. Its totient is φ = 490647175200.

The previous prime is 1231120300021. The next prime is 1231120300037. The reversal of 1231120300030 is 300030211321.

It is a junction number, because it is equal to n+sod(n) for n = 1231120299977 and 1231120300013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231120300037) 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, 27912895 + ... + 27956965.

It is an arithmetic number, because the mean of its divisors is an integer number (69503835744).

Almost surely, 2^{1231120300030} is an apocalyptic number.

1231120300030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231120300030 is a deficient number, since it is larger than the sum of its proper divisors (993002443778).

1231120300030 is a wasteful number, since it uses less digits than its factorization.

1231120300030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54232.

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

Adding to 1231120300030 its reverse (300030211321), we get a palindrome (1531150511351).

The spelling of 1231120300030 in words is "one trillion, two hundred thirty-one billion, one hundred twenty million, three hundred thousand, thirty".