131225504340 has 96 divisors (see below), whose sum is σ = 425836099584. Its totient is φ = 29571937920.

The previous prime is 131225504323. The next prime is 131225504351. The reversal of 131225504340 is 43405522131.

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 = 131225504298 and 131225504307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2170474 + ... + 2230113.

It is an arithmetic number, because the mean of its divisors is an integer number (4435792704).

Almost surely, 2^131225504340 is an apocalyptic number.

131225504340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131225504340 is an abundant number, since it is smaller than the sum of its proper divisors (294610595244).

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

131225504340 is a wasteful number, since it uses less digits than its factorization.

131225504340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400677 (or 4400675 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 131225504340 in words is "one hundred thirty-one billion, two hundred twenty-five million, five hundred four thousand, three hundred forty".