213020230031231 has 32 divisors (see below), whose sum is σ = 261497738492928. Its totient is φ = 169374515950080.

The previous prime is 213020230031227. The next prime is 213020230031341. The reversal of 213020230031231 is 132130032020312.

It is not a de Polignac number, because 213020230031231 - 2² = 213020230031227 is a prime.

It is a super-2 number, since 2×213020230031231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213020230031197 and 213020230031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020230036231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21456155 + ... + 29772588.

It is an arithmetic number, because the mean of its divisors is an integer number (8171804327904).

Almost surely, 2^{213020230031231} is an apocalyptic number.

213020230031231 is a deficient number, since it is larger than the sum of its proper divisors (48477508461697).

213020230031231 is a wasteful number, since it uses less digits than its factorization.

213020230031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51229271.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213020230031231 its reverse (132130032020312), we get a palindrome (345150262051543).

The spelling of 213020230031231 in words is "two hundred thirteen trillion, twenty billion, two hundred thirty million, thirty-one thousand, two hundred thirty-one".