1211310030 has 32 divisors (see below), whose sum is σ = 3322450944. Its totient is φ = 276870816.

The previous prime is 1211310011. The next prime is 1211310031. The reversal of 1211310030 is 300131121.

It is a junction number, because it is equal to n+sod(n) for n = 1211309988 and 1211310015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211310031) 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, 2883862 + ... + 2884281.

It is an arithmetic number, because the mean of its divisors is an integer number (103826592).

Almost surely, 2^1211310030 is an apocalyptic number.

1211310030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211310030 is an abundant number, since it is smaller than the sum of its proper divisors (2111140914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211310030 is a wasteful number, since it uses less digits than its factorization.

1211310030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768160.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1211310030 is about 34803.8795251334. The cubic root of 1211310030 is about 1065.9866630502.

Adding to 1211310030 its reverse (300131121), we get a palindrome (1511441151).

The spelling of 1211310030 in words is "one billion, two hundred eleven million, three hundred ten thousand, thirty".