131515145100 has 72 divisors (see below), whose sum is σ = 422796845520. Its totient is φ = 35070704640.

The previous prime is 131515145089. The next prime is 131515145173. The reversal of 131515145100 is 1541515131.

131515145100 is a `hidden beast` number, since 1 + 3 + 1 + 515 + 1 + 45 + 100 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24351957 + ... + 24357356.

It is an arithmetic number, because the mean of its divisors is an integer number (5872178410).

Almost surely, 2^131515145100 is an apocalyptic number.

131515145100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131515145100 is an abundant number, since it is smaller than the sum of its proper divisors (291281700420).

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

131515145100 is a wasteful number, since it uses less digits than its factorization.

131515145100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48709336 (or 48709323 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 131515145100 in words is "one hundred thirty-one billion, five hundred fifteen million, one hundred forty-five thousand, one hundred".