131154411521420 has 96 divisors (see below), whose sum is σ = 322321265280000. Its totient is φ = 43897085616384.

The previous prime is 131154411521333. The next prime is 131154411521461. The reversal of 131154411521420 is 24125114451131.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 31 ways as a sum of consecutive naturals, for example, 42934970 + ... + 45888129.

It is an arithmetic number, because the mean of its divisors is an integer number (3357513180000).

Almost surely, 2^{131154411521420} is an apocalyptic number.

131154411521420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131154411521420 is an abundant number, since it is smaller than the sum of its proper divisors (191166853758580).

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

131154411521420 is a wasteful number, since it uses less digits than its factorization.

131154411521420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88823367 (or 88823365 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

Adding to 131154411521420 its reverse (24125114451131), we get a palindrome (155279525972551).

The spelling of 131154411521420 in words is "one hundred thirty-one trillion, one hundred fifty-four billion, four hundred eleven million, five hundred twenty-one thousand, four hundred twenty".