1211343030 has 24 divisors (see below), whose sum is σ = 3149492112. Its totient is φ = 323024784.

The previous prime is 1211342921. The next prime is 1211343061. The reversal of 1211343030 is 303431121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1211342994 and 1211343012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6729594 + ... + 6729773.

It is an arithmetic number, because the mean of its divisors is an integer number (131228838).

Almost surely, 2^1211343030 is an apocalyptic number.

1211343030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211343030 is an abundant number, since it is smaller than the sum of its proper divisors (1938149082).

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

1211343030 is a wasteful number, since it uses less digits than its factorization.

1211343030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13459380 (or 13459377 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1211343030 is about 34804.3536069843. The cubic root of 1211343030 is about 1065.9963432695.

Adding to 1211343030 its reverse (303431121), we get a palindrome (1514774151).

The spelling of 1211343030 in words is "one billion, two hundred eleven million, three hundred forty-three thousand, thirty".