131032453440 has 112 divisors (see below), whose sum is σ = 475460641152. Its totient is φ = 29950273536.

The previous prime is 131032453417. The next prime is 131032453441. The reversal of 131032453440 is 44354230131.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131032453398 and 131032453407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032453441) 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, 9742719 + ... + 9756158.

It is an arithmetic number, because the mean of its divisors is an integer number (4245184296).

Almost surely, 2^131032453440 is an apocalyptic number.

131032453440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131032453440 is an abundant number, since it is smaller than the sum of its proper divisors (344428187712).

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

131032453440 is a wasteful number, since it uses less digits than its factorization.

131032453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19498904 (or 19498894 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 131032453440 its reverse (44354230131), we get a palindrome (175386683571).

The spelling of 131032453440 in words is "one hundred thirty-one billion, thirty-two million, four hundred fifty-three thousand, four hundred forty".