768147231 has 4 divisors (see below), whose sum is σ = 1024196312. Its totient is φ = 512098152.

The previous prime is 768147229. The next prime is 768147239. The reversal of 768147231 is 132741867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132741867 = 3 ⋅44247289.

It is not a de Polignac number, because 768147231 - 2¹ = 768147229 is a prime.

It is a super-2 number, since 2×768147231² = 1180100336985934722, which 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 768147231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768147239) 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, 128024536 + ... + 128024541.

It is an arithmetic number, because the mean of its divisors is an integer number (256049078).

Almost surely, 2^768147231 is an apocalyptic number.

768147231 is a deficient number, since it is larger than the sum of its proper divisors (256049081).

768147231 is a wasteful number, since it uses less digits than its factorization.

768147231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256049080.

The product of its digits is 56448, while the sum is 39.

The square root of 768147231 is about 27715.4691643494. The cubic root of 768147231 is about 915.8299102419.

The spelling of 768147231 in words is "seven hundred sixty-eight million, one hundred forty-seven thousand, two hundred thirty-one".