131281827490 has 32 divisors (see below), whose sum is σ = 257925363264. Its totient is φ = 47713736640.

The previous prime is 131281827449. The next prime is 131281827493. The reversal of 131281827490 is 94728182131.

It is a super-2 number, since 2×131281827490² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131281827490.

It is not an unprimeable number, because it can be changed into a prime (131281827493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103149 + ... + 522688.

It is an arithmetic number, because the mean of its divisors is an integer number (8060167602).

Almost surely, 2^131281827490 is an apocalyptic number.

131281827490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131281827490 is a deficient number, since it is larger than the sum of its proper divisors (126643535774).

131281827490 is a wasteful number, since it uses less digits than its factorization.

131281827490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627762.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 131281827490 in words is "one hundred thirty-one billion, two hundred eighty-one million, eight hundred twenty-seven thousand, four hundred ninety".