1200000311230 has 48 divisors (see below), whose sum is σ = 2514349540080. Its totient is φ = 411150999168.

The previous prime is 1200000311207. The next prime is 1200000311231. The reversal of 1200000311230 is 321130000021.

It is a super-2 number, since 2×1200000311230² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200000311230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000311231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99015 + ... + 1552354.

It is an arithmetic number, because the mean of its divisors is an integer number (52382282085).

Almost surely, 2^{1200000311230} is an apocalyptic number.

1200000311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200000311230 is an abundant number, since it is smaller than the sum of its proper divisors (1314349228850).

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

1200000311230 is a wasteful number, since it uses less digits than its factorization.

1200000311230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652873 (or 1652866 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1200000311230 its reverse (321130000021), we get a palindrome (1521130311251).

The spelling of 1200000311230 in words is "one trillion, two hundred billion, three hundred eleven thousand, two hundred thirty".