131455212240 has 80 divisors (see below), whose sum is σ = 444557635776. Its totient is φ = 31867929600.

The previous prime is 131455212209. The next prime is 131455212241. The reversal of 131455212240 is 42212554131.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 131455212198 and 131455212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131455212241) 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, 24894181 + ... + 24899460.

Almost surely, 2^131455212240 is an apocalyptic number.

131455212240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131455212240 is an abundant number, since it is smaller than the sum of its proper divisors (313102423536).

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

131455212240 is a wasteful number, since it uses less digits than its factorization.

131455212240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49793668 (or 49793662 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 131455212240 its reverse (42212554131), we get a palindrome (173667766371).

The spelling of 131455212240 in words is "one hundred thirty-one billion, four hundred fifty-five million, two hundred twelve thousand, two hundred forty".