213243020031 has 8 divisors (see below), whose sum is σ = 284347003824. Its totient is φ = 142150524800.

The previous prime is 213243020009. The next prime is 213243020033. The reversal of 213243020031 is 130020342312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213243020031 - 2⁶ = 213243019967 is a prime.

It is a super-2 number, since 2×213243020031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213243020033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2828736 + ... + 2903141.

It is an arithmetic number, because the mean of its divisors is an integer number (35543375478).

Almost surely, 2^213243020031 is an apocalyptic number.

213243020031 is a deficient number, since it is larger than the sum of its proper divisors (71103983793).

213243020031 is a wasteful number, since it uses less digits than its factorization.

213243020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744281.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 213243020031 its reverse (130020342312), we get a palindrome (343263362343).

The spelling of 213243020031 in words is "two hundred thirteen billion, two hundred forty-three million, twenty thousand, thirty-one".