68401231 has 4 divisors (see below), whose sum is σ = 68422264. Its totient is φ = 68380200.

The previous prime is 68401211. The next prime is 68401247. The reversal of 68401231 is 13210486.

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 68401231 - 2²¹ = 66304079 is a prime.

It is a super-2 number, since 2×68401231² = 9357456804630722, 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 = 68401196 and 68401205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68401211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4485 + ... + 12526.

It is an arithmetic number, because the mean of its divisors is an integer number (17105566).

Almost surely, 2^68401231 is an apocalyptic number.

68401231 is a deficient number, since it is larger than the sum of its proper divisors (21033).

68401231 is a wasteful number, since it uses less digits than its factorization.

68401231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032.

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

The square root of 68401231 is about 8270.5036726913. The cubic root of 68401231 is about 408.9667239383.

It can be divided in two parts, 68401 and 231, that multiplied together give a triangular number (15800631 = T₅₆₂₁).

The spelling of 68401231 in words is "sixty-eight million, four hundred one thousand, two hundred thirty-one".