210122431 has 8 divisors (see below), whose sum is σ = 222992784. Its totient is φ = 197308800.

The previous prime is 210122401. The next prime is 210122443. The reversal of 210122431 is 134221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210122431 - 2⁷ = 210122303 is a prime.

It is a super-2 number, since 2×210122431² = 88302872018699522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210122401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6420 + ... + 21481.

It is an arithmetic number, because the mean of its divisors is an integer number (27874098).

Almost surely, 2^210122431 is an apocalyptic number.

210122431 is a deficient number, since it is larger than the sum of its proper divisors (12870353).

210122431 is a wasteful number, since it uses less digits than its factorization.

210122431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28361.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 210122431 is about 14495.6004015011. The cubic root of 210122431 is about 594.5076839958.

Adding to 210122431 its reverse (134221012), we get a palindrome (344343443).

The spelling of 210122431 in words is "two hundred ten million, one hundred twenty-two thousand, four hundred thirty-one".