131994738 has 16 divisors (see below), whose sum is σ = 293321760. Its totient is φ = 43998228.

The previous prime is 131994719. The next prime is 131994761. The reversal of 131994738 is 837499131.

It is a super-2 number, since 2×131994738² = 34845221719377288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131994693 and 131994702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222120 + ... + 1222227.

It is an arithmetic number, because the mean of its divisors is an integer number (18332610).

Almost surely, 2^131994738 is an apocalyptic number.

131994738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131994738 is an abundant number, since it is smaller than the sum of its proper divisors (161327022).

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

131994738 is a wasteful number, since it uses less digits than its factorization.

131994738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444358 (or 2444352 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 131994738 is about 11488.8962916374. The cubic root of 131994738 is about 509.1575711621.

The spelling of 131994738 in words is "one hundred thirty-one million, nine hundred ninety-four thousand, seven hundred thirty-eight".