68707131 has 4 divisors (see below), whose sum is σ = 91609512. Its totient is φ = 45804752.

The previous prime is 68707117. The next prime is 68707147. The reversal of 68707131 is 13170786.

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 68707131 - 2¹³ = 68698939 is a prime.

It is a super-2 number, since 2×68707131² = 9441339700502322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68707092 and 68707101.

It is not an unprimeable number, because it can be changed into a prime (68707031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11451186 + ... + 11451191.

It is an arithmetic number, because the mean of its divisors is an integer number (22902378).

Almost surely, 2^68707131 is an apocalyptic number.

68707131 is a deficient number, since it is larger than the sum of its proper divisors (22902381).

68707131 is a wasteful number, since it uses less digits than its factorization.

68707131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22902380.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 68707131 is about 8288.9764748128. The cubic root of 68707131 is about 409.5754697573.

The spelling of 68707131 in words is "sixty-eight million, seven hundred seven thousand, one hundred thirty-one".