1244320231 has 16 divisors (see below), whose sum is σ = 1571005440. Its totient is φ = 957322080.

The previous prime is 1244320229. The next prime is 1244320271. The reversal of 1244320231 is 1320234421.

It is not a de Polignac number, because 1244320231 - 2¹ = 1244320229 is a prime.

It is a super-2 number, since 2×1244320231² = 3096665674551786722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244320271) 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, 96196 + ... + 108361.

It is an arithmetic number, because the mean of its divisors is an integer number (98187840).

Almost surely, 2^1244320231 is an apocalyptic number.

1244320231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1244320231 is a deficient number, since it is larger than the sum of its proper divisors (326685209).

1244320231 is a wasteful number, since it uses less digits than its factorization.

1244320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204654.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1244320231 is about 35274.9235435033. The cubic root of 1244320231 is about 1075.5833087430.

Adding to 1244320231 its reverse (1320234421), we get a palindrome (2564554652).

The spelling of 1244320231 in words is "one billion, two hundred forty-four million, three hundred twenty thousand, two hundred thirty-one".