213231303031 has 8 divisors (see below), whose sum is σ = 215035089984. Its totient is φ = 211435111680.

The previous prime is 213231303023. The next prime is 213231303091. The reversal of 213231303031 is 130303132312.

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 213231303031 - 2³ = 213231303023 is a prime.

It is a super-2 number, since 2×213231303031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213231302993 and 213231303011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213231303001) 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, 1842511 + ... + 1954816.

It is an arithmetic number, because the mean of its divisors is an integer number (26879386248).

Almost surely, 2^213231303031 is an apocalyptic number.

213231303031 is a deficient number, since it is larger than the sum of its proper divisors (1803786953).

213231303031 is a wasteful number, since it uses less digits than its factorization.

213231303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797801.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213231303031 its reverse (130303132312), we get a palindrome (343534435343).

The spelling of 213231303031 in words is "two hundred thirteen billion, two hundred thirty-one million, three hundred three thousand, thirty-one".