1230319861 has 8 divisors (see below), whose sum is σ = 1269851040. Its totient is φ = 1191411408.

The previous prime is 1230319843. The next prime is 1230319877. The reversal of 1230319861 is 1689130321.

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 1230319861 - 2⁵ = 1230319829 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 (1230319261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151666 + ... + 159571.

It is an arithmetic number, because the mean of its divisors is an integer number (158731380).

Almost surely, 2^1230319861 is an apocalyptic number.

It is an amenable number.

1230319861 is a deficient number, since it is larger than the sum of its proper divisors (39531179).

1230319861 is an equidigital number, since it uses as much as digits as its factorization.

1230319861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311363.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1230319861 is about 35075.9156829868. The cubic root of 1230319861 is about 1071.5341375967.

The spelling of 1230319861 in words is "one billion, two hundred thirty million, three hundred nineteen thousand, eight hundred sixty-one".