131452436340 has 72 divisors (see below), whose sum is σ = 399522712680. Its totient is φ = 34985090304.

The previous prime is 131452436333. The next prime is 131452436347. The reversal of 131452436340 is 43634254131.

131452436340 is a `hidden beast` number, since 1 + 3 + 14 + 5 + 2 + 4 + 3 + 634 + 0 = 666.

131452436340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (131452436333) and next prime (131452436347).

It can be written as a sum of positive squares in 4 ways, for example, as 43432227216 + 88020209124 = 208404^2 + 296682^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 131452436295 and 131452436304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131452436347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625759 + ... + 808998.

It is an arithmetic number, because the mean of its divisors is an integer number (5548926565).

Almost surely, 2^131452436340 is an apocalyptic number.

131452436340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131452436340 is an abundant number, since it is smaller than the sum of its proper divisors (268070276340).

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

131452436340 is a wasteful number, since it uses less digits than its factorization.

131452436340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435281 (or 1435276 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 131452436340 in words is "one hundred thirty-one billion, four hundred fifty-two million, four hundred thirty-six thousand, three hundred forty".