31431746000 has 40 divisors (see below), whose sum is σ = 76001966664. Its totient is φ = 12572697600.

The previous prime is 31431745997. The next prime is 31431746023. The reversal of 31431746000 is 64713413.

It can be written as a sum of positive squares in 4 ways, for example, as 108409744 + 31323336256 = 10412^2 + 176984^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 7855937 + ... + 7859936.

Almost surely, 2^31431746000 is an apocalyptic number.

It is an amenable number.

31431746000 is an abundant number, since it is smaller than the sum of its proper divisors (44570220664).

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

31431746000 is a wasteful number, since it uses less digits than its factorization.

31431746000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715896 (or 15715880 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 31431746000 in words is "thirty-one billion, four hundred thirty-one million, seven hundred forty-six thousand".