1231400124200 has 24 divisors (see below), whose sum is σ = 2863005289230. Its totient is φ = 492560049600.

The previous prime is 1231400124121. The next prime is 1231400124217. The reversal of 1231400124200 is 24210041321.

It can be written as a sum of positive squares in 3 ways, for example, as 745041732964 + 486358391236 = 863158^2 + 697394^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3078500111 + ... + 3078500510.

Almost surely, 2^{1231400124200} is an apocalyptic number.

1231400124200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231400124200 is an abundant number, since it is smaller than the sum of its proper divisors (1631605165030).

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

1231400124200 is a wasteful number, since it uses less digits than its factorization.

1231400124200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157000637 (or 6157000628 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1231400124200 its reverse (24210041321), we get a palindrome (1255610165521).

The spelling of 1231400124200 in words is "one trillion, two hundred thirty-one billion, four hundred million, one hundred twenty-four thousand, two hundred".