131224698 has 80 divisors (see below), whose sum is σ = 323215200. Its totient is φ = 39463200.

The previous prime is 131224679. The next prime is 131224699. The reversal of 131224698 is 896422131.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (20736) is a multiple of the sum of its prime divisors (576).

It is not an unprimeable number, because it can be changed into a prime (131224699) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 375828 + ... + 376176.

It is an arithmetic number, because the mean of its divisors is an integer number (4040190).

Almost surely, 2^131224698 is an apocalyptic number.

131224698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131224698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161607600).

131224698 is an abundant number, since it is smaller than the sum of its proper divisors (191990502).

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

131224698 is a wasteful number, since it uses less digits than its factorization.

131224698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 576 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 131224698 is about 11455.3349143532. The cubic root of 131224698 is about 508.1655199778.

The spelling of 131224698 in words is "one hundred thirty-one million, two hundred twenty-four thousand, six hundred ninety-eight".