993031971 has 8 divisors (see below), whose sum is σ = 1337692944. Its totient is φ = 655196160.

The previous prime is 993031957. The next prime is 993031973. The reversal of 993031971 is 179130399.

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

It is not a de Polignac number, because 993031971 - 2¹⁷ = 992900899 is a prime.

It is a super-2 number, since 2×993031971² = 1972224990856289682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (993031973) 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, 1705950 + ... + 1706531.

It is an arithmetic number, because the mean of its divisors is an integer number (167211618).

Almost surely, 2^993031971 is an apocalyptic number.

993031971 is a deficient number, since it is larger than the sum of its proper divisors (344660973).

993031971 is a wasteful number, since it uses less digits than its factorization.

993031971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412581.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 993031971 is about 31512.4097936035. The cubic root of 993031971 is about 997.6719078597.

The spelling of 993031971 in words is "nine hundred ninety-three million, thirty-one thousand, nine hundred seventy-one".