10123321340 has 24 divisors (see below), whose sum is σ = 23191609392. Its totient is φ = 3681207680.

The previous prime is 10123321321. The next prime is 10123321349. The reversal of 10123321340 is 4312332101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123321349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23007329 + ... + 23007768.

It is an arithmetic number, because the mean of its divisors is an integer number (966317058).

Almost surely, 2^10123321340 is an apocalyptic number.

10123321340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10123321340 is an abundant number, since it is smaller than the sum of its proper divisors (13068288052).

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

10123321340 is a wasteful number, since it uses less digits than its factorization.

10123321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46015117 (or 46015115 counting only the distinct ones).

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

Adding to 10123321340 its reverse (4312332101), we get a palindrome (14435653441).

The spelling of 10123321340 in words is "ten billion, one hundred twenty-three million, three hundred twenty-one thousand, three hundred forty".