211401323403 has 16 divisors (see below), whose sum is σ = 291699597600. Its totient is φ = 136022351360.

The previous prime is 211401323389. The next prime is 211401323423. The reversal of 211401323403 is 304323104112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211401323403 - 2⁴ = 211401323387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211401323423) 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, 235518 + ... + 691571.

It is an arithmetic number, because the mean of its divisors is an integer number (18231224850).

Almost surely, 2^211401323403 is an apocalyptic number.

211401323403 is a deficient number, since it is larger than the sum of its proper divisors (80298274197).

211401323403 is a wasteful number, since it uses less digits than its factorization.

211401323403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929742.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 211401323403 its reverse (304323104112), we get a palindrome (515724427515).

The spelling of 211401323403 in words is "two hundred eleven billion, four hundred one million, three hundred twenty-three thousand, four hundred three".