231301213203 has 4 divisors (see below), whose sum is σ = 308401617608. Its totient is φ = 154200808800.

The previous prime is 231301213153. The next prime is 231301213259. The reversal of 231301213203 is 302312103132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231301213203 - 2³⁰ = 230227471379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231301213203.

It is not an unprimeable number, because it can be changed into a prime (231301213603) 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, 38550202198 + ... + 38550202203.

It is an arithmetic number, because the mean of its divisors is an integer number (77100404402).

Almost surely, 2^231301213203 is an apocalyptic number.

231301213203 is a deficient number, since it is larger than the sum of its proper divisors (77100404405).

231301213203 is an equidigital number, since it uses as much as digits as its factorization.

231301213203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77100404404.

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

Adding to 231301213203 its reverse (302312103132), we get a palindrome (533613316335).

The spelling of 231301213203 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirteen thousand, two hundred three".