1230381533 has 4 divisors (see below), whose sum is σ = 1230590400. Its totient is φ = 1230172668.

The previous prime is 1230381517. The next prime is 1230381547. The reversal of 1230381533 is 3351830321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230381533 - 2⁴ = 1230381517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230381496 and 1230381505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230381553) 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, 95333 + ... + 107466.

It is an arithmetic number, because the mean of its divisors is an integer number (307647600).

Almost surely, 2^1230381533 is an apocalyptic number.

It is an amenable number.

1230381533 is a deficient number, since it is larger than the sum of its proper divisors (208867).

1230381533 is an equidigital number, since it uses as much as digits as its factorization.

1230381533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208866.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1230381533 is about 35076.7947937094. The cubic root of 1230381533 is about 1071.5520414907.

The spelling of 1230381533 in words is "one billion, two hundred thirty million, three hundred eighty-one thousand, five hundred thirty-three".