231322021203 has 64 divisors (see below), whose sum is σ = 395206848512. Its totient is φ = 117091630080.

The previous prime is 231322021201. The next prime is 231322021211. The reversal of 231322021203 is 302120223132.

It is a happy number.

It is not a de Polignac number, because 231322021203 - 2¹ = 231322021201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 231322021203.

It is not an unprimeable number, because it can be changed into a prime (231322021201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 580518 + ... + 894228.

It is an arithmetic number, because the mean of its divisors is an integer number (6175107008).

Almost surely, 2^231322021203 is an apocalyptic number.

231322021203 is a deficient number, since it is larger than the sum of its proper divisors (163884827309).

231322021203 is a wasteful number, since it uses less digits than its factorization.

231322021203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313844.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231322021203 its reverse (302120223132), we get a palindrome (533442244335).

The spelling of 231322021203 in words is "two hundred thirty-one billion, three hundred twenty-two million, twenty-one thousand, two hundred three".