1232261653 has 12 divisors (see below), whose sum is σ = 1472191212. Its totient is φ = 1027676160.

The previous prime is 1232261633. The next prime is 1232261689. The reversal of 1232261653 is 3561622321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 969886449 + 262375204 = 31143^2 + 16198^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1232261653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232261633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338028 + ... + 341653.

It is an arithmetic number, because the mean of its divisors is an integer number (122682601).

Almost surely, 2^1232261653 is an apocalyptic number.

It is an amenable number.

1232261653 is a deficient number, since it is larger than the sum of its proper divisors (239929559).

1232261653 is an equidigital number, since it uses as much as digits as its factorization.

1232261653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679732 (or 679725 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 1232261653 is about 35103.5846175287. The cubic root of 1232261653 is about 1072.0975690530.

Adding to 1232261653 its reverse (3561622321), we get a palindrome (4793883974).

The spelling of 1232261653 in words is "one billion, two hundred thirty-two million, two hundred sixty-one thousand, six hundred fifty-three".