231571601186213 has 4 divisors (see below), whose sum is σ = 232094336178048. Its totient is φ = 231048866194380.

The previous prime is 231571601186183. The next prime is 231571601186231. The reversal of 231571601186213 is 312681106175132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231571601186213 - 2¹⁰ = 231571601185189 is a prime.

It is a super-2 number, since 2×231571601186213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231571601186813) 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, 261367495253 + ... + 261367496138.

It is an arithmetic number, because the mean of its divisors is an integer number (58023584044512).

Almost surely, 2^{231571601186213} is an apocalyptic number.

It is an amenable number.

231571601186213 is a deficient number, since it is larger than the sum of its proper divisors (522734991835).

231571601186213 is an equidigital number, since it uses as much as digits as its factorization.

231571601186213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522734991834.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 231571601186213 in words is "two hundred thirty-one trillion, five hundred seventy-one billion, six hundred one million, one hundred eighty-six thousand, two hundred thirteen".