213401202231 has 16 divisors (see below), whose sum is σ = 325215408384. Its totient is φ = 121931310144.

The previous prime is 213401202167. The next prime is 213401202307. The reversal of 213401202231 is 132202104312.

It is not a de Polignac number, because 213401202231 - 2⁶ = 213401202167 is a prime.

It is a super-2 number, since 2×213401202231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 213401202198 and 213401202207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213401200231) 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, 293310 + ... + 716123.

It is an arithmetic number, because the mean of its divisors is an integer number (20325963024).

Almost surely, 2^213401202231 is an apocalyptic number.

213401202231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213401202231 is a deficient number, since it is larger than the sum of its proper divisors (111814206153).

213401202231 is a wasteful number, since it uses less digits than its factorization.

213401202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019510.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213401202231 its reverse (132202104312), we get a palindrome (345603306543).

The spelling of 213401202231 in words is "two hundred thirteen billion, four hundred one million, two hundred two thousand, two hundred thirty-one".