31330000001 has 4 divisors (see below), whose sum is σ = 31489035732. Its totient is φ = 31170964272.

The previous prime is 31329999931. The next prime is 31330000019. The reversal of 31330000001 is 10000003313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14652860401 + 16677139600 = 121049^2 + 129140^2 .

It is a cyclic number.

It is not a de Polignac number, because 31330000001 - 2³⁰ = 30256258177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31330000021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79517570 + ... + 79517963.

It is an arithmetic number, because the mean of its divisors is an integer number (7872258933).

Almost surely, 2^31330000001 is an apocalyptic number.

It is an amenable number.

31330000001 is a deficient number, since it is larger than the sum of its proper divisors (159035731).

31330000001 is a wasteful number, since it uses less digits than its factorization.

31330000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159035730.

The product of its (nonzero) digits is 27, while the sum is 11.

Adding to 31330000001 its reverse (10000003313), we get a palindrome (41330003314).

The spelling of 31330000001 in words is "thirty-one billion, three hundred thirty million, one", and thus it is an aban number.