2123403431402 has 16 divisors (see below), whose sum is σ = 3494744907552. Its totient is φ = 959604281520.

The previous prime is 2123403431399. The next prime is 2123403431419. The reversal of 2123403431402 is 2041343043212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278950928 + ... + 278958539.

It is an arithmetic number, because the mean of its divisors is an integer number (218421556722).

Almost surely, 2^{2123403431402} is an apocalyptic number.

2123403431402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123403431402 is a deficient number, since it is larger than the sum of its proper divisors (1371341476150).

2123403431402 is a wasteful number, since it uses less digits than its factorization.

2123403431402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557909653.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 2123403431402 its reverse (2041343043212), we get a palindrome (4164746474614).

The spelling of 2123403431402 in words is "two trillion, one hundred twenty-three billion, four hundred three million, four hundred thirty-one thousand, four hundred two".