1231022416 has 20 divisors (see below), whose sum is σ = 2568576052. Its totient is φ = 568164096.

The previous prime is 1231022413. The next prime is 1231022437. The reversal of 1231022416 is 6142201321.

It can be written as a sum of positive squares in 2 ways, for example, as 457960000 + 773062416 = 21400^2 + 27804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231022413) 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, 2958981 + ... + 2959396.

Almost surely, 2^1231022416 is an apocalyptic number.

1231022416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1231022416 is an abundant number, since it is smaller than the sum of its proper divisors (1337553636).

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

1231022416 is a wasteful number, since it uses less digits than its factorization.

1231022416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5918398 (or 5918392 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1231022416 is about 35085.9290314508. The cubic root of 1231022416 is about 1071.7380597478.

Adding to 1231022416 its reverse (6142201321), we get a palindrome (7373223737).

The spelling of 1231022416 in words is "one billion, two hundred thirty-one million, twenty-two thousand, four hundred sixteen".