1231103120030 has 288 divisors, whose sum is σ = 2864078753760. Its totient is φ = 378550824960.

The previous prime is 1231103120017. The next prime is 1231103120111. The reversal of 1231103120030 is 300213011321.

It is a super-2 number, since 2×1231103120030² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 1231103119990 and 1231103120008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2163625586 + ... + 2163626154.

It is an arithmetic number, because the mean of its divisors is an integer number (9944717895).

Almost surely, 2^{1231103120030} is an apocalyptic number.

1231103120030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231103120030 is an abundant number, since it is smaller than the sum of its proper divisors (1632975633730).

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

1231103120030 is a wasteful number, since it uses less digits than its factorization.

1231103120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1231103120030 its reverse (300213011321), we get a palindrome (1531316131351).

The spelling of 1231103120030 in words is "one trillion, two hundred thirty-one billion, one hundred three million, one hundred twenty thousand, thirty".