131677994 has 12 divisors (see below), whose sum is σ = 229764834. Its totient is φ = 56433384.

The previous prime is 131677993. The next prime is 131678017. The reversal of 131677994 is 499776131.

It can be written as a sum of positive squares in only one way, i.e., 124032769 + 7645225 = 11137^2 + 2765^2 .

It is not an unprimeable number, because it can be changed into a prime (131677993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 671729 + ... + 671924.

Almost surely, 2^131677994 is an apocalyptic number.

131677994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131677994 is a deficient number, since it is larger than the sum of its proper divisors (98086840).

131677994 is a wasteful number, since it uses less digits than its factorization.

131677994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343669 (or 1343662 counting only the distinct ones).

The product of its digits is 285768, while the sum is 47.

The square root of 131677994 is about 11475.1032239366. The cubic root of 131677994 is about 508.7499746653.

The spelling of 131677994 in words is "one hundred thirty-one million, six hundred seventy-seven thousand, nine hundred ninety-four".