131698280 has 128 divisors (see below), whose sum is σ = 358560000. Its totient is φ = 43464960.

The previous prime is 131698279. The next prime is 131698283. The reversal of 131698280 is 82896131.

It is not an unprimeable number, because it can be changed into a prime (131698283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397715 + ... + 398045.

It is an arithmetic number, because the mean of its divisors is an integer number (2801250).

Almost surely, 2^131698280 is an apocalyptic number.

131698280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131698280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179280000).

131698280 is an abundant number, since it is smaller than the sum of its proper divisors (226861720).

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

131698280 is a wasteful number, since it uses less digits than its factorization.

131698280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 131698280 is about 11475.9871035131. The cubic root of 131698280 is about 508.7760989293.

The spelling of 131698280 in words is "one hundred thirty-one million, six hundred ninety-eight thousand, two hundred eighty".