210023001 has 24 divisors (see below), whose sum is σ = 310752000. Its totient is φ = 136648512.

The previous prime is 210022993. The next prime is 210023039. The reversal of 210023001 is 100320012.

It is a happy number.

It is not a de Polignac number, because 210023001 - 2³ = 210022993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210023081) 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, 61620 + ... + 64938.

It is an arithmetic number, because the mean of its divisors is an integer number (12948000).

Almost surely, 2^210023001 is an apocalyptic number.

It is an amenable number.

210023001 is a deficient number, since it is larger than the sum of its proper divisors (100728999).

210023001 is a wasteful number, since it uses less digits than its factorization.

210023001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 210023001 is about 14492.1703343564. The cubic root of 210023001 is about 594.4138954601.

Adding to 210023001 its reverse (100320012), we get a palindrome (310343013).

The spelling of 210023001 in words is "two hundred ten million, twenty-three thousand, one".