1302131100 has 72 divisors (see below), whose sum is σ = 3772397440. Its totient is φ = 346783680.

The previous prime is 1302131093. The next prime is 1302131107. The reversal of 1302131100 is 11312031.

It is an interprime number because it is at equal distance from previous prime (1302131093) and next prime (1302131107).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302131107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273339 + ... + 278061.

Almost surely, 2^1302131100 is an apocalyptic number.

1302131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302131100 is an abundant number, since it is smaller than the sum of its proper divisors (2470266340).

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

1302131100 is a wasteful number, since it uses less digits than its factorization.

1302131100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659 (or 5652 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1302131100 is about 36085.0536926301. The cubic root of 1302131100 is about 1091.9889337257.

Adding to 1302131100 its reverse (11312031), we get a palindrome (1313443131).

The spelling of 1302131100 in words is "one billion, three hundred two million, one hundred thirty-one thousand, one hundred".