1903240423123 has 16 divisors (see below), whose sum is σ = 2051309764000. Its totient is φ = 1755409605120.

The previous prime is 1903240423009. The next prime is 1903240423157. The reversal of 1903240423123 is 3213240423091.

It is a cyclic number.

It is not a de Polignac number, because 1903240423123 - 2¹³ = 1903240414931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1903240426123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197242603 + ... + 197252251.

It is an arithmetic number, because the mean of its divisors is an integer number (128206860250).

Almost surely, 2^{1903240423123} is an apocalyptic number.

1903240423123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1903240423123 is a deficient number, since it is larger than the sum of its proper divisors (148069340877).

1903240423123 is a wasteful number, since it uses less digits than its factorization.

1903240423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20422.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 1903240423123 in words is "one trillion, nine hundred three billion, two hundred forty million, four hundred twenty-three thousand, one hundred twenty-three".