131812804840 has 32 divisors (see below), whose sum is σ = 298712484000. Its totient is φ = 52345802304.

The previous prime is 131812804831. The next prime is 131812804939. The reversal of 131812804840 is 48408218131.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 131812804793 and 131812804802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11848110 + ... + 11859229.

It is an arithmetic number, because the mean of its divisors is an integer number (9334765125).

Almost surely, 2^131812804840 is an apocalyptic number.

131812804840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131812804840 is an abundant number, since it is smaller than the sum of its proper divisors (166899679160).

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

131812804840 is a wasteful number, since it uses less digits than its factorization.

131812804840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707489 (or 23707485 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 131812804840 in words is "one hundred thirty-one billion, eight hundred twelve million, eight hundred four thousand, eight hundred forty".