231210310120203 has 16 divisors (see below), whose sum is σ = 343594268910720. Its totient is φ = 137437707563136.

The previous prime is 231210310120193. The next prime is 231210310120303. The reversal of 231210310120203 is 302021013012132.

It is not a de Polignac number, because 231210310120203 - 2¹³ = 231210310112011 is a prime.

It is a super-2 number, since 2×231210310120203² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231210310120203.

It is not an unprimeable number, because it can be changed into a prime (231210310120303) 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, 119303564625 + ... + 119303566562.

It is an arithmetic number, because the mean of its divisors is an integer number (21474641806920).

Almost surely, 2^{231210310120203} is an apocalyptic number.

231210310120203 is a deficient number, since it is larger than the sum of its proper divisors (112383958790517).

231210310120203 is a wasteful number, since it uses less digits than its factorization.

231210310120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238607131226.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231210310120203 its reverse (302021013012132), we get a palindrome (533231323132335).

The spelling of 231210310120203 in words is "two hundred thirty-one trillion, two hundred ten billion, three hundred ten million, one hundred twenty thousand, two hundred three".