1231314544 has 40 divisors (see below), whose sum is σ = 2479305600. Its totient is φ = 591763200.

The previous prime is 1231314517. The next prime is 1231314559. The reversal of 1231314544 is 4454131321.

It is a super-2 number, since 2×1231314544² = 3032271012531855872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65574 + ... + 82234.

It is an arithmetic number, because the mean of its divisors is an integer number (61982640).

Almost surely, 2^1231314544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231314544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239652800).

1231314544 is an abundant number, since it is smaller than the sum of its proper divisors (1247991056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231314544 is a wasteful number, since it uses less digits than its factorization.

1231314544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849 (or 16843 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1231314544 is about 35090.0918209115. The cubic root of 1231314544 is about 1071.8228293749.

Adding to 1231314544 its reverse (4454131321), we get a palindrome (5685445865).

The spelling of 1231314544 in words is "one billion, two hundred thirty-one million, three hundred fourteen thousand, five hundred forty-four".