1023403402340 has 48 divisors (see below), whose sum is σ = 2351166048000. Its totient is φ = 371092423680.

The previous prime is 1023403402327. The next prime is 1023403402367. The reversal of 1023403402340 is 432043043201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6511340 + ... + 6666659.

It is an arithmetic number, because the mean of its divisors is an integer number (48982626000).

Almost surely, 2^{1023403402340} is an apocalyptic number.

1023403402340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023403402340 is an abundant number, since it is smaller than the sum of its proper divisors (1327762645660).

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

1023403402340 is a wasteful number, since it uses less digits than its factorization.

1023403402340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13178372 (or 13178370 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 1023403402340 its reverse (432043043201), we get a palindrome (1455446445541).

The spelling of 1023403402340 in words is "one trillion, twenty-three billion, four hundred three million, four hundred two thousand, three hundred forty".