213395395867431 has 16 divisors (see below), whose sum is σ = 301356529171200. Its totient is φ = 133854065509248.

The previous prime is 213395395867429. The next prime is 213395395867439. The reversal of 213395395867431 is 134768593593312.

It is not a de Polignac number, because 213395395867431 - 2¹ = 213395395867429 is a prime.

It is a super-2 number, since 2×213395395867431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213395395867439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641782771 + ... + 642115188.

It is an arithmetic number, because the mean of its divisors is an integer number (18834783073200).

Almost surely, 2^{213395395867431} is an apocalyptic number.

213395395867431 is a deficient number, since it is larger than the sum of its proper divisors (87961133303769).

213395395867431 is a wasteful number, since it uses less digits than its factorization.

213395395867431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283901238.

The product of its digits is 440899200, while the sum is 69.

The spelling of 213395395867431 in words is "two hundred thirteen trillion, three hundred ninety-five billion, three hundred ninety-five million, eight hundred sixty-seven thousand, four hundred thirty-one".