1243131102 has 48 divisors (see below), whose sum is σ = 2731229280. Its totient is φ = 408600576.

The previous prime is 1243131091. The next prime is 1243131151. The reversal of 1243131102 is 2011313421.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475174 + ... + 477782.

It is an arithmetic number, because the mean of its divisors is an integer number (56900610).

Almost surely, 2^1243131102 is an apocalyptic number.

1243131102 is an abundant number, since it is smaller than the sum of its proper divisors (1488098178).

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

1243131102 is a wasteful number, since it uses less digits than its factorization.

1243131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1243131102 is about 35258.0643541304. The cubic root of 1243131102 is about 1075.2405741010.

Adding to 1243131102 its reverse (2011313421), we get a palindrome (3254444523).

The spelling of 1243131102 in words is "one billion, two hundred forty-three million, one hundred thirty-one thousand, one hundred two".