31894958149 has 8 divisors (see below), whose sum is σ = 32516461440. Its totient is φ = 31276152000.

The previous prime is 31894958143. The next prime is 31894958191. The reversal of 31894958149 is 94185949813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31894958149 - 2¹⁷ = 31894827077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31894958143) 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, 650397 + ... + 697714.

It is an arithmetic number, because the mean of its divisors is an integer number (4064557680).

Almost surely, 2^31894958149 is an apocalyptic number.

It is an amenable number.

31894958149 is a deficient number, since it is larger than the sum of its proper divisors (621503291).

31894958149 is a wasteful number, since it uses less digits than its factorization.

31894958149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348571.

The product of its digits is 11197440, while the sum is 61.

The spelling of 31894958149 in words is "thirty-one billion, eight hundred ninety-four million, nine hundred fifty-eight thousand, one hundred forty-nine".