131381308 has 6 divisors (see below), whose sum is σ = 229917296. Its totient is φ = 65690652.

The previous prime is 131381303. The next prime is 131381347. The reversal of 131381308 is 803183131.

It is a super-3 number, since 3×131381308³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131381303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16422660 + ... + 16422667.

Almost surely, 2^131381308 is an apocalyptic number.

It is an amenable number.

131381308 is a deficient number, since it is larger than the sum of its proper divisors (98535988).

131381308 is a wasteful number, since it uses less digits than its factorization.

131381308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32845331 (or 32845329 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 131381308 is about 11462.1685557315. The cubic root of 131381308 is about 508.3675961736.

It can be divided in two parts, 1313 and 81308, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 131381308 in words is "one hundred thirty-one million, three hundred eighty-one thousand, three hundred eight".