1230121319 has 16 divisors (see below), whose sum is σ = 1454435136. Its totient is φ = 1018464000.

The previous prime is 1230121301. The next prime is 1230121357. The reversal of 1230121319 is 9131210321.

It is a cyclic number.

It is not a de Polignac number, because 1230121319 - 2¹² = 1230117223 is a prime.

It is a super-2 number, since 2×1230121319² = 3026396918916599522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230121294 and 1230121303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230121369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7769 + ... + 50205.

It is an arithmetic number, because the mean of its divisors is an integer number (90902196).

Almost surely, 2^1230121319 is an apocalyptic number.

1230121319 is a deficient number, since it is larger than the sum of its proper divisors (224313817).

1230121319 is a wasteful number, since it uses less digits than its factorization.

1230121319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42586.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1230121319 is about 35073.0853932185. The cubic root of 1230121319 is about 1071.4764951406.

The spelling of 1230121319 in words is "one billion, two hundred thirty million, one hundred twenty-one thousand, three hundred nineteen".