31428734564 has 24 divisors (see below), whose sum is σ = 58352364000. Its totient is φ = 14760337536.

The previous prime is 31428734563. The next prime is 31428734587. The reversal of 31428734564 is 46543782413.

It is not an unprimeable number, because it can be changed into a prime (31428734563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429182 + ... + 497045.

It is an arithmetic number, because the mean of its divisors is an integer number (2431348500).

Almost surely, 2^31428734564 is an apocalyptic number.

31428734564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31428734564 is a deficient number, since it is larger than the sum of its proper divisors (26923629436).

31428734564 is a wasteful number, since it uses less digits than its factorization.

31428734564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926747 (or 926745 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 47.

The spelling of 31428734564 in words is "thirty-one billion, four hundred twenty-eight million, seven hundred thirty-four thousand, five hundred sixty-four".