68297222831 has 4 divisors (see below), whose sum is σ = 68413573032. Its totient is φ = 68180872632.

The previous prime is 68297222813. The next prime is 68297222897. The reversal of 68297222831 is 13822279286.

It is a happy number.

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 68297222831 - 2³⁰ = 67223481007 is a prime.

It is a super-2 number, since 2×68297222831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68297222831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68297222131) 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, 58174220 + ... + 58175393.

It is an arithmetic number, because the mean of its divisors is an integer number (17103393258).

Almost surely, 2^68297222831 is an apocalyptic number.

68297222831 is a deficient number, since it is larger than the sum of its proper divisors (116350201).

68297222831 is a wasteful number, since it uses less digits than its factorization.

68297222831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116350200.

The product of its digits is 1161216, while the sum is 50.

The spelling of 68297222831 in words is "sixty-eight billion, two hundred ninety-seven million, two hundred twenty-two thousand, eight hundred thirty-one".