123312782734 has 16 divisors (see below), whose sum is σ = 199544994288. Its totient is φ = 56934646912.

The previous prime is 123312782729. The next prime is 123312782771. The reversal of 123312782734 is 437287213321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34213732 + ... + 34217335.

It is an arithmetic number, because the mean of its divisors is an integer number (12471562143).

Almost surely, 2^123312782734 is an apocalyptic number.

123312782734 is a deficient number, since it is larger than the sum of its proper divisors (76232211554).

123312782734 is a wasteful number, since it uses less digits than its factorization.

123312782734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68431139.

The product of its digits is 338688, while the sum is 43.

The spelling of 123312782734 in words is "one hundred twenty-three billion, three hundred twelve million, seven hundred eighty-two thousand, seven hundred thirty-four".