1213131102 has 8 divisors (see below), whose sum is σ = 2426262216. Its totient is φ = 404377032.

The previous prime is 1213131097. The next prime is 1213131109. The reversal of 1213131102 is 2011313121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1213131102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101094253 + ... + 101094264.

It is an arithmetic number, because the mean of its divisors is an integer number (303282777).

Almost surely, 2^1213131102 is an apocalyptic number.

1213131102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1213131102 is a wasteful number, since it uses less digits than its factorization.

1213131102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202188522.

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

The square root of 1213131102 is about 34830.0316106661. The cubic root of 1213131102 is about 1066.5205936473.

Adding to 1213131102 its reverse (2011313121), we get a palindrome (3224444223).

The spelling of 1213131102 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred two".