10400400203 has 2 divisors, whose sum is σ = 10400400204. Its totient is φ = 10400400202.

The previous prime is 10400400193. The next prime is 10400400223. The reversal of 10400400203 is 30200400401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10400400203 - 2¹⁶ = 10400334667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10400400223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200200101 + 5200200102.

It is an arithmetic number, because the mean of its divisors is an integer number (5200200102).

Almost surely, 2^10400400203 is an apocalyptic number.

10400400203 is a deficient number, since it is larger than the sum of its proper divisors (1).

10400400203 is an equidigital number, since it uses as much as digits as its factorization.

10400400203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 10400400203 its reverse (30200400401), we get a palindrome (40600800604).

The spelling of 10400400203 in words is "ten billion, four hundred million, four hundred thousand, two hundred three".