210131021023 has 16 divisors (see below), whose sum is σ = 270432552960. Its totient is φ = 158456570400.

The previous prime is 210131020991. The next prime is 210131021069. The reversal of 210131021023 is 320120131012.

It is a cyclic number.

It is not a de Polignac number, because 210131021023 - 2⁵ = 210131020991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210131020988 and 210131021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210131021623) 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, 44013328 + ... + 44018101.

It is an arithmetic number, because the mean of its divisors is an integer number (16902034560).

Almost surely, 2^210131021023 is an apocalyptic number.

210131021023 is a deficient number, since it is larger than the sum of its proper divisors (60301531937).

210131021023 is a wasteful number, since it uses less digits than its factorization.

210131021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88031478.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210131021023 its reverse (320120131012), we get a palindrome (530251152035).

The spelling of 210131021023 in words is "two hundred ten billion, one hundred thirty-one million, twenty-one thousand, twenty-three".