1231430351400 has 144 divisors (see below), whose sum is σ = 4146467644800. Its totient is φ = 327514803840.

The previous prime is 1231430351369. The next prime is 1231430351429. The reversal of 1231430351400 is 41530341321.

It is a happy number.

1231430351400 is a `hidden beast` number, since 1 + 2 + 3 + 143 + 0 + 3 + 514 + 0 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 220344 + ... + 1584743.

It is an arithmetic number, because the mean of its divisors is an integer number (28794914200).

Almost surely, 2^{1231430351400} is an apocalyptic number.

1231430351400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231430351400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073233822400).

1231430351400 is an abundant number, since it is smaller than the sum of its proper divisors (2915037293400).

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

1231430351400 is a wasteful number, since it uses less digits than its factorization.

1231430351400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805488 (or 1805476 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 1231430351400 its reverse (41530341321), we get a palindrome (1272960692721).

The spelling of 1231430351400 in words is "one trillion, two hundred thirty-one billion, four hundred thirty million, three hundred fifty-one thousand, four hundred".