131122456 has 16 divisors (see below), whose sum is σ = 254332800. Its totient is φ = 63300384.

The previous prime is 131122429. The next prime is 131122457. The reversal of 131122456 is 654221131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131122456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282360 + ... + 282823.

It is an arithmetic number, because the mean of its divisors is an integer number (15895800).

Almost surely, 2^131122456 is an apocalyptic number.

It is an amenable number.

131122456 is a deficient number, since it is larger than the sum of its proper divisors (123210344).

131122456 is a wasteful number, since it uses less digits than its factorization.

131122456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565218 (or 565214 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 131122456 is about 11450.8714078886. The cubic root of 131122456 is about 508.0335088567.

Adding to 131122456 its reverse (654221131), we get a palindrome (785343587).

The spelling of 131122456 in words is "one hundred thirty-one million, one hundred twenty-two thousand, four hundred fifty-six".