268221031 has 8 divisors (see below), whose sum is σ = 292922784. Its totient is φ = 244100640.

The previous prime is 268221013. The next prime is 268221061. The reversal of 268221031 is 130122862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268221031 - 2¹⁹ = 267696743 is a prime.

It is a super-2 number, since 2×268221031² = 143885042941405922, 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 = 268220987 and 268221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268221001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144376 + ... + 146221.

It is an arithmetic number, because the mean of its divisors is an integer number (36615348).

Almost surely, 2^268221031 is an apocalyptic number.

268221031 is a deficient number, since it is larger than the sum of its proper divisors (24701753).

268221031 is a wasteful number, since it uses less digits than its factorization.

268221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290681.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 268221031 is about 16377.4549610127. The cubic root of 268221031 is about 644.9077695978.

Adding to 268221031 its reverse (130122862), we get a palindrome (398343893).

The spelling of 268221031 in words is "two hundred sixty-eight million, two hundred twenty-one thousand, thirty-one".