8731342431378 has 64 divisors (see below), whose sum is σ = 22593231141120. Its totient is φ = 2447600029056.

The previous prime is 8731342431349. The next prime is 8731342431401.

8731342431378 is a `hidden beast` number, since 8 + 7 + 3 + 134 + 2 + 431 + 3 + 78 = 666.

8731342431378 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217893075 + ... + 217933142.

It is an arithmetic number, because the mean of its divisors is an integer number (353019236580).

Almost surely, 2^{8731342431378} is an apocalyptic number.

8731342431378 is an abundant number, since it is smaller than the sum of its proper divisors (13861888709742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8731342431378 is a wasteful number, since it uses less digits than its factorization.

8731342431378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435826288 (or 435826282 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 8731342431378 in words is "eight trillion, seven hundred thirty-one billion, three hundred forty-two million, four hundred thirty-one thousand, three hundred seventy-eight".