31431428630 has 16 divisors (see below), whose sum is σ = 64658939040. Its totient is φ = 10776489792.

The previous prime is 31431428629. The next prime is 31431428681. The reversal of 31431428630 is 3682413413.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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, 224510135 + ... + 224510274.

It is an arithmetic number, because the mean of its divisors is an integer number (4041183690).

Almost surely, 2^31431428630 is an apocalyptic number.

31431428630 is an abundant number, since it is smaller than the sum of its proper divisors (33227510410).

31431428630 is a wasteful number, since it uses less digits than its factorization.

31431428630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449020423.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 31431428630 in words is "thirty-one billion, four hundred thirty-one million, four hundred twenty-eight thousand, six hundred thirty".