230668350781 has 16 divisors (see below), whose sum is σ = 255214803456. Its totient is φ = 206718750000.

The previous prime is 230668350761. The next prime is 230668350791. The reversal of 230668350781 is 187053866032.

It is a 10-Lehmer number, since φ(230668350781) divides (230668350781-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 230668350781 - 2²⁵ = 230634796349 is a prime.

It is a super-2 number, since 2×230668350781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230668350701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8773906 + ... + 8800156.

It is an arithmetic number, because the mean of its divisors is an integer number (15950925216).

Almost surely, 2^230668350781 is an apocalyptic number.

230668350781 is the 214788-th centered decagonal number.

It is an amenable number.

230668350781 is a deficient number, since it is larger than the sum of its proper divisors (24546452675).

230668350781 is a wasteful number, since it uses less digits than its factorization.

230668350781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37584.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 230668350781 in words is "two hundred thirty billion, six hundred sixty-eight million, three hundred fifty thousand, seven hundred eighty-one".