131233011345440 has 24 divisors (see below), whose sum is σ = 310037989303980. Its totient is φ = 52493204538112.

The previous prime is 131233011345433. The next prime is 131233011345463. The reversal of 131233011345440 is 44543110332131.

It can be written as a sum of positive squares in 2 ways, for example, as 112271062406416 + 18961948939024 = 10595804^2 + 4354532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131233011345440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410103160295 + ... + 410103160614.

Almost surely, 2^{131233011345440} is an apocalyptic number.

131233011345440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131233011345440 is an abundant number, since it is smaller than the sum of its proper divisors (178804977958540).

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

131233011345440 is an equidigital number, since it uses as much as digits as its factorization.

131233011345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820206320924 (or 820206320916 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 131233011345440 its reverse (44543110332131), we get a palindrome (175776121677571).

The spelling of 131233011345440 in words is "one hundred thirty-one trillion, two hundred thirty-three billion, eleven million, three hundred forty-five thousand, four hundred forty".