31311331001 has 8 divisors (see below), whose sum is σ = 32455442880. Its totient is φ = 30171513232.

The previous prime is 31311330997. The next prime is 31311331081. The reversal of 31311331001 is 10013311313.

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

It is not a de Polignac number, because 31311331001 - 2² = 31311330997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311331081) 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, 1058675 + ... + 1087848.

It is an arithmetic number, because the mean of its divisors is an integer number (4056930360).

Almost surely, 2^31311331001 is an apocalyptic number.

It is an amenable number.

31311331001 is a deficient number, since it is larger than the sum of its proper divisors (1144111879).

31311331001 is a wasteful number, since it uses less digits than its factorization.

31311331001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147055.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 31311331001 its reverse (10013311313), we get a palindrome (41324642314).

The spelling of 31311331001 in words is "thirty-one billion, three hundred eleven million, three hundred thirty-one thousand, one".