1451231215 has 16 divisors (see below), whose sum is σ = 1990909440. Its totient is φ = 994805280.

The previous prime is 1451231141. The next prime is 1451231219. The reversal of 1451231215 is 5121321541.

It is not a de Polignac number, because 1451231215 - 2¹¹ = 1451229167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1451231215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451231219) 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, 159766 + ... + 168604.

It is an arithmetic number, because the mean of its divisors is an integer number (124431840).

Almost surely, 2^1451231215 is an apocalyptic number.

1451231215 is a deficient number, since it is larger than the sum of its proper divisors (539678225).

1451231215 is an equidigital number, since it uses as much as digits as its factorization.

1451231215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13542.

The product of its digits is 1200, while the sum is 25.

The square root of 1451231215 is about 38095.0287439188. The cubic root of 1451231215 is about 1132.1714621533.

Adding to 1451231215 its reverse (5121321541), we get a palindrome (6572552756).

The spelling of 1451231215 in words is "one billion, four hundred fifty-one million, two hundred thirty-one thousand, two hundred fifteen".