131278630 has 32 divisors (see below), whose sum is σ = 272203776. Its totient is φ = 44652384.

The previous prime is 131278579. The next prime is 131278663. The reversal of 131278630 is 36872131.

It is a junction number, because it is equal to n+sod(n) for n = 131278592 and 131278601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (8506368).

Almost surely, 2^131278630 is an apocalyptic number.

131278630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131278630 is an abundant number, since it is smaller than the sum of its proper divisors (140925146).

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

131278630 is a wasteful number, since it uses less digits than its factorization.

131278630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 131278630 is about 11457.6886848963. The cubic root of 131278630 is about 508.2351273752.

The spelling of 131278630 in words is "one hundred thirty-one million, two hundred seventy-eight thousand, six hundred thirty".