213102323031 has 16 divisors (see below), whose sum is σ = 306010137440. Its totient is φ = 131132580480.

The previous prime is 213102322987. The next prime is 213102323047. The reversal of 213102323031 is 130323201312.

It is not a de Polignac number, because 213102323031 - 2⁶ = 213102322967 is a prime.

It is a super-2 number, since 2×213102323031² (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 = 213102322989 and 213102323007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213102321031) 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, 603765 + ... + 889233.

It is an arithmetic number, because the mean of its divisors is an integer number (19125633590).

Almost surely, 2^213102323031 is an apocalyptic number.

213102323031 is a deficient number, since it is larger than the sum of its proper divisors (92907814409).

213102323031 is a wasteful number, since it uses less digits than its factorization.

213102323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304626.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213102323031 its reverse (130323201312), we get a palindrome (343425524343).

The spelling of 213102323031 in words is "two hundred thirteen billion, one hundred two million, three hundred twenty-three thousand, thirty-one".