211402323 has 24 divisors (see below), whose sum is σ = 336875760. Its totient is φ = 126677760.

The previous prime is 211402313. The next prime is 211402337. The reversal of 211402323 is 323204112.

It is not a de Polignac number, because 211402323 - 2⁴ = 211402307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211402296 and 211402305.

It is not an unprimeable number, because it can be changed into a prime (211402313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3186 + ... + 20807.

It is an arithmetic number, because the mean of its divisors is an integer number (14036490).

Almost surely, 2^211402323 is an apocalyptic number.

211402323 is a deficient number, since it is larger than the sum of its proper divisors (125473437).

211402323 is a wasteful number, since it uses less digits than its factorization.

211402323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24099 (or 24096 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 211402323 is about 14539.6809799940. The cubic root of 211402323 is about 595.7123243827.

Adding to 211402323 its reverse (323204112), we get a palindrome (534606435).

The spelling of 211402323 in words is "two hundred eleven million, four hundred two thousand, three hundred twenty-three".