31431458730 has 32 divisors (see below), whose sum is σ = 86212001664. Its totient is φ = 7184333376.

The previous prime is 31431458711. The next prime is 31431458731. The reversal of 31431458730 is 3785413413.

It is not an unprimeable number, because it can be changed into a prime (31431458731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74836597 + ... + 74837016.

It is an arithmetic number, because the mean of its divisors is an integer number (2694125052).

Almost surely, 2^31431458730 is an apocalyptic number.

31431458730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31431458730 is an abundant number, since it is smaller than the sum of its proper divisors (54780542934).

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

31431458730 is a wasteful number, since it uses less digits than its factorization.

31431458730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149673630.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 31431458730 in words is "thirty-one billion, four hundred thirty-one million, four hundred fifty-eight thousand, seven hundred thirty".