31300993 has 8 divisors (see below), whose sum is σ = 32006240. Its totient is φ = 30602880.

The previous prime is 31300963. The next prime is 31301003. The reversal of 31300993 is 39900313.

It is a happy number.

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 31300993 - 2⁹ = 31300481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31300903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7633 + ... + 10993.

It is an arithmetic number, because the mean of its divisors is an integer number (4000780).

Almost surely, 2^31300993 is an apocalyptic number.

It is an amenable number.

31300993 is a deficient number, since it is larger than the sum of its proper divisors (705247).

31300993 is a wasteful number, since it uses less digits than its factorization.

31300993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 31300993 is about 5594.7290372278. The cubic root of 31300993 is about 315.1514951140.

The spelling of 31300993 in words is "thirty-one million, three hundred thousand, nine hundred ninety-three".