231032001213 has 24 divisors (see below), whose sum is σ = 361672206168. Its totient is φ = 141267964032.

The previous prime is 231032001197. The next prime is 231032001259. The reversal of 231032001213 is 312100230132.

It can be written as a sum of positive squares in 4 ways, for example, as 25404215769 + 205627785444 = 159387^2 + 453462^2 .

It is not a de Polignac number, because 231032001213 - 2⁴ = 231032001197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231032001113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6270270 + ... + 6307007.

It is an arithmetic number, because the mean of its divisors is an integer number (15069675257).

Almost surely, 2^231032001213 is an apocalyptic number.

It is an amenable number.

231032001213 is a deficient number, since it is larger than the sum of its proper divisors (130640204955).

231032001213 is a wasteful number, since it uses less digits than its factorization.

231032001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12577453 (or 12577450 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231032001213 its reverse (312100230132), we get a palindrome (543132231345).

The spelling of 231032001213 in words is "two hundred thirty-one billion, thirty-two million, one thousand, two hundred thirteen".