1238231653 has 8 divisors (see below), whose sum is σ = 1303736000. Its totient is φ = 1172760768.

The previous prime is 1238231651. The next prime is 1238231671. The reversal of 1238231653 is 3561328321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1238231653 - 2¹ = 1238231651 is a prime.

It is a super-2 number, since 2×1238231653² = 3066435252982224818, 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 (1238231651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112525 + ... + 123037.

It is an arithmetic number, because the mean of its divisors is an integer number (162967000).

Almost surely, 2^1238231653 is an apocalyptic number.

It is an amenable number.

1238231653 is a deficient number, since it is larger than the sum of its proper divisors (65504347).

1238231653 is a wasteful number, since it uses less digits than its factorization.

1238231653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16731.

The product of its digits is 25920, while the sum is 34.

The square root of 1238231653 is about 35188.5159249435. The cubic root of 1238231653 is about 1073.8261289067.

Adding to 1238231653 its reverse (3561328321), we get a palindrome (4799559974).

The spelling of 1238231653 in words is "one billion, two hundred thirty-eight million, two hundred thirty-one thousand, six hundred fifty-three".