1211313102 has 32 divisors (see below), whose sum is σ = 2484276480. Its totient is φ = 393516480.

The previous prime is 1211313049. The next prime is 1211313149. The reversal of 1211313102 is 2013131121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318649 + ... + 322427.

It is an arithmetic number, because the mean of its divisors is an integer number (77633640).

Almost surely, 2^1211313102 is an apocalyptic number.

1211313102 is an abundant number, since it is smaller than the sum of its proper divisors (1272963378).

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

1211313102 is a wasteful number, since it uses less digits than its factorization.

1211313102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1211313102 is about 34803.9236581165. The cubic root of 1211313102 is about 1065.9875641980.

Adding to 1211313102 its reverse (2013131121), we get a palindrome (3224444223).

The spelling of 1211313102 in words is "one billion, two hundred eleven million, three hundred thirteen thousand, one hundred two".