231201013 has 4 divisors (see below), whose sum is σ = 231262560. Its totient is φ = 231139468.

The previous prime is 231201011. The next prime is 231201023. The reversal of 231201013 is 310102132.

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 231201013 - 2¹ = 231201011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231200984 and 231201002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201011) 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, 24745 + ... + 32782.

It is an arithmetic number, because the mean of its divisors is an integer number (57815640).

Almost surely, 2^231201013 is an apocalyptic number.

It is an amenable number.

231201013 is a deficient number, since it is larger than the sum of its proper divisors (61547).

231201013 is an equidigital number, since it uses as much as digits as its factorization.

231201013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61546.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231201013 is about 15205.2955577983. The cubic root of 231201013 is about 613.7571684198.

Adding to 231201013 its reverse (310102132), we get a palindrome (541303145).

The spelling of 231201013 in words is "two hundred thirty-one million, two hundred one thousand, thirteen".