1231332102 has 192 divisors, whose sum is σ = 3680861184. Its totient is φ = 287089920.

The previous prime is 1231332079. The next prime is 1231332119. The reversal of 1231332102 is 2012331321.

1231332102 is a `hidden beast` number, since 1 + 231 + 332 + 102 = 666.

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 95 ways as a sum of consecutive naturals, for example, 665743 + ... + 667589.

It is an arithmetic number, because the mean of its divisors is an integer number (19171152).

Almost surely, 2^1231332102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231332102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840430592).

1231332102 is an abundant number, since it is smaller than the sum of its proper divisors (2449529082).

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

1231332102 is a wasteful number, since it uses less digits than its factorization.

1231332102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 1920 counting only the distinct ones).

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

The square root of 1231332102 is about 35090.3420046029. The cubic root of 1231332102 is about 1071.8279239236.

Adding to 1231332102 its reverse (2012331321), we get a palindrome (3243663423).

It can be divided in two parts, 1231 and 332102, that added together give a palindrome (333333).

The spelling of 1231332102 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, one hundred two".