68148031 has 4 divisors (see below), whose sum is σ = 77883472. Its totient is φ = 58412592.

The previous prime is 68147977. The next prime is 68148071. The reversal of 68148031 is 13084186.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68148031 - 2¹³ = 68139839 is a prime.

It is a super-2 number, since 2×68148031² = 9288308258353922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68147984 and 68148002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68148071) 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 3 ways as a sum of consecutive naturals, for example, 4867710 + ... + 4867723.

It is an arithmetic number, because the mean of its divisors is an integer number (19470868).

Almost surely, 2^68148031 is an apocalyptic number.

68148031 is a deficient number, since it is larger than the sum of its proper divisors (9735441).

68148031 is an equidigital number, since it uses as much as digits as its factorization.

68148031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9735440.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 68148031 is about 8255.1820694640. The cubic root of 68148031 is about 408.4614776302.

The spelling of 68148031 in words is "sixty-eight million, one hundred forty-eight thousand, thirty-one".