68653131 has 4 divisors (see below), whose sum is σ = 91537512. Its totient is φ = 45768752.

The previous prime is 68653129. The next prime is 68653139. The reversal of 68653131 is 13135686.

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

It is a cyclic number.

It is not a de Polignac number, because 68653131 - 2¹ = 68653129 is a prime.

It is a super-2 number, since 2×68653131² = 9426504792206322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68653092 and 68653101.

It is not an unprimeable number, because it can be changed into a prime (68653139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11442186 + ... + 11442191.

It is an arithmetic number, because the mean of its divisors is an integer number (22884378).

Almost surely, 2^68653131 is an apocalyptic number.

68653131 is a deficient number, since it is larger than the sum of its proper divisors (22884381).

68653131 is a wasteful number, since it uses less digits than its factorization.

68653131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22884380.

The product of its digits is 12960, while the sum is 33.

The square root of 68653131 is about 8285.7184963043. The cubic root of 68653131 is about 409.4681404217.

The spelling of 68653131 in words is "sixty-eight million, six hundred fifty-three thousand, one hundred thirty-one".