210130031421 has 12 divisors (see below), whose sum is σ = 306931507740. Its totient is φ = 138512679360.

The previous prime is 210130031347. The next prime is 210130031459. The reversal of 210130031421 is 124130031012.

210130031421 is a `hidden beast` number, since 210 + 1 + 3 + 0 + 0 + 31 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81687356100 + 128442675321 = 285810^2 + 358389^2 .

It is not a de Polignac number, because 210130031421 - 2¹⁷ = 210129900349 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210130031394 and 210130031403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210130032421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131166510 + ... + 131168111.

It is an arithmetic number, because the mean of its divisors is an integer number (25577625645).

Almost surely, 2^210130031421 is an apocalyptic number.

It is an amenable number.

210130031421 is a deficient number, since it is larger than the sum of its proper divisors (96801476319).

210130031421 is a wasteful number, since it uses less digits than its factorization.

210130031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262334716 (or 262334713 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 210130031421 its reverse (124130031012), we get a palindrome (334260062433).

The spelling of 210130031421 in words is "two hundred ten billion, one hundred thirty million, thirty-one thousand, four hundred twenty-one".