1231013032400 has 180 divisors, whose sum is σ = 3123915012000. Its totient is φ = 466107367680.

The previous prime is 1231013032399. The next prime is 1231013032421. The reversal of 1231013032400 is 42303101321.

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

It is a congruent number.

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, 228004901 + ... + 228010299.

It is an arithmetic number, because the mean of its divisors is an integer number (17355083400).

Almost surely, 2^{1231013032400} is an apocalyptic number.

1231013032400 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 1231013032400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561957506000).

1231013032400 is an abundant number, since it is smaller than the sum of its proper divisors (1892901979600).

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

1231013032400 is a wasteful number, since it uses less digits than its factorization.

1231013032400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034 (or 7004 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1231013032400 its reverse (42303101321), we get a palindrome (1273316133721).

The spelling of 1231013032400 in words is "one trillion, two hundred thirty-one billion, thirteen million, thirty-two thousand, four hundred".