213512103511 has 16 divisors (see below), whose sum is σ = 252005713920. Its totient is φ = 177103967040.

The previous prime is 213512103509. The next prime is 213512103577. The reversal of 213512103511 is 115301215312.

It is not a de Polignac number, because 213512103511 - 2¹ = 213512103509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213512113511) 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, 3616635 + ... + 3675196.

It is an arithmetic number, because the mean of its divisors is an integer number (15750357120).

Almost surely, 2^213512103511 is an apocalyptic number.

213512103511 is a deficient number, since it is larger than the sum of its proper divisors (38493610409).

213512103511 is an equidigital number, since it uses as much as digits as its factorization.

213512103511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291974.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 213512103511 its reverse (115301215312), we get a palindrome (328813318823).

The spelling of 213512103511 in words is "two hundred thirteen billion, five hundred twelve million, one hundred three thousand, five hundred eleven".