2231010321 has 4 divisors (see below), whose sum is σ = 2974680432. Its totient is φ = 1487340212.

The previous prime is 2231010319. The next prime is 2231010359. The reversal of 2231010321 is 1230101322.

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 2231010321 - 2¹ = 2231010319 is a prime.

It is a super-3 number, since 3×2231010321³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231010321.

It is not an unprimeable number, because it can be changed into a prime (2231010391) 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, 371835051 + ... + 371835056.

It is an arithmetic number, because the mean of its divisors is an integer number (743670108).

Almost surely, 2^2231010321 is an apocalyptic number.

It is an amenable number.

2231010321 is a deficient number, since it is larger than the sum of its proper divisors (743670111).

2231010321 is an equidigital number, since it uses as much as digits as its factorization.

2231010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743670110.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2231010321 is about 47233.5719695218. The cubic root of 2231010321 is about 1306.6738299260.

Adding to 2231010321 its reverse (1230101322), we get a palindrome (3461111643).

The spelling of 2231010321 in words is "two billion, two hundred thirty-one million, ten thousand, three hundred twenty-one".