213102220031 has 4 divisors (see below), whose sum is σ = 215093829672. Its totient is φ = 211110610392.

The previous prime is 213102219997. The next prime is 213102220039. The reversal of 213102220031 is 130022201312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213102220031 - 2¹⁰ = 213102219007 is a prime.

It is a super-2 number, since 2×213102220031² (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 = 213102219991 and 213102220009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213102220039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995804660 + ... + 995804873.

It is an arithmetic number, because the mean of its divisors is an integer number (53773457418).

Almost surely, 2^213102220031 is an apocalyptic number.

213102220031 is a deficient number, since it is larger than the sum of its proper divisors (1991609641).

213102220031 is a wasteful number, since it uses less digits than its factorization.

213102220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991609640.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213102220031 its reverse (130022201312), we get a palindrome (343124421343).

The spelling of 213102220031 in words is "two hundred thirteen billion, one hundred two million, two hundred twenty thousand, thirty-one".