1023444321400 has 96 divisors (see below), whose sum is σ = 2528155152000. Its totient is φ = 384206785920.

The previous prime is 1023444321377. The next prime is 1023444321479. The reversal of 1023444321400 is 41234443201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 851940 + ... + 1665139.

It is an arithmetic number, because the mean of its divisors is an integer number (26334949500).

Almost surely, 2^{1023444321400} is an apocalyptic number.

1023444321400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023444321400 is an abundant number, since it is smaller than the sum of its proper divisors (1504710830600).

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

1023444321400 is a wasteful number, since it uses less digits than its factorization.

1023444321400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517221 (or 2517212 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1023444321400 its reverse (41234443201), we get a palindrome (1064678764601).

The spelling of 1023444321400 in words is "one trillion, twenty-three billion, four hundred forty-four million, three hundred twenty-one thousand, four hundred".