2231321015 has 32 divisors (see below), whose sum is σ = 3368977920. Its totient is φ = 1378166400.

The previous prime is 2231321003. The next prime is 2231321021. The reversal of 2231321015 is 5101231322.

It is not a de Polignac number, because 2231321015 - 2⁴ = 2231320999 is a prime.

It is a super-3 number, since 3×2231321015³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15380 + ... + 68550.

It is an arithmetic number, because the mean of its divisors is an integer number (105280560).

Almost surely, 2^2231321015 is an apocalyptic number.

2231321015 is a deficient number, since it is larger than the sum of its proper divisors (1137656905).

2231321015 is a wasteful number, since it uses less digits than its factorization.

2231321015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53303.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2231321015 is about 47236.8607657198. The cubic root of 2231321015 is about 1306.7344835935.

Adding to 2231321015 its reverse (5101231322), we get a palindrome (7332552337).

The spelling of 2231321015 in words is "two billion, two hundred thirty-one million, three hundred twenty-one thousand, fifteen".