31931241001 has 16 divisors (see below), whose sum is σ = 35602918848. Its totient is φ = 28394632000.

The previous prime is 31931240983. The next prime is 31931241011. The reversal of 31931241001 is 10014213913.

It is not a de Polignac number, because 31931241001 - 2¹¹ = 31931238953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31931241011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80926 + ... + 265351.

It is an arithmetic number, because the mean of its divisors is an integer number (2225182428).

Almost surely, 2^31931241001 is an apocalyptic number.

It is an amenable number.

31931241001 is a deficient number, since it is larger than the sum of its proper divisors (3671677847).

31931241001 is a wasteful number, since it uses less digits than its factorization.

31931241001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346472.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 31931241001 its reverse (10014213913), we get a palindrome (41945454914).

The spelling of 31931241001 in words is "thirty-one billion, nine hundred thirty-one million, two hundred forty-one thousand, one".