131004031340 has 144 divisors (see below), whose sum is σ = 352657765152. Its totient is φ = 40496246784.

The previous prime is 131004031243. The next prime is 131004031369. The reversal of 131004031340 is 43130400131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 428252 + ... + 667388.

It is an arithmetic number, because the mean of its divisors is an integer number (2449012258).

Almost surely, 2^131004031340 is an apocalyptic number.

131004031340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131004031340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176328882576).

131004031340 is an abundant number, since it is smaller than the sum of its proper divisors (221653733812).

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

131004031340 is a wasteful number, since it uses less digits than its factorization.

131004031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239216 (or 239207 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131004031340 its reverse (43130400131), we get a palindrome (174134431471).

The spelling of 131004031340 in words is "one hundred thirty-one billion, four million, thirty-one thousand, three hundred forty".