20403413423 has 2 divisors, whose sum is σ = 20403413424. Its totient is φ = 20403413422.

The previous prime is 20403413419. The next prime is 20403413461. The reversal of 20403413423 is 32431430402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20403413423 - 2² = 20403413419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20403413392 and 20403413401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20403613423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201706711 + 10201706712.

It is an arithmetic number, because the mean of its divisors is an integer number (10201706712).

Almost surely, 2^20403413423 is an apocalyptic number.

20403413423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20403413423 is an equidigital number, since it uses as much as digits as its factorization.

20403413423 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20403413423 its reverse (32431430402), we get a palindrome (52834843825).

The spelling of 20403413423 in words is "twenty billion, four hundred three million, four hundred thirteen thousand, four hundred twenty-three".