62131681 has 4 divisors (see below), whose sum is σ = 62147632. Its totient is φ = 62115732.

The previous prime is 62131673. The next prime is 62131709. The reversal of 62131681 is 18613126.

62131681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 62131681 - 2³ = 62131673 is a prime.

It is a super-2 number, since 2×62131681² = 7720691567771522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (62137681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (15536908).

Almost surely, 2^62131681 is an apocalyptic number.

It is an amenable number.

62131681 is a deficient number, since it is larger than the sum of its proper divisors (15951).

62131681 is an equidigital number, since it uses as much as digits as its factorization.

62131681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15950.

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

The square root of 62131681 is about 7882.3651907280. The cubic root of 62131681 is about 396.0691666587.

The spelling of 62131681 in words is "sixty-two million, one hundred thirty-one thousand, six hundred eighty-one".