3131200001 has 4 divisors (see below), whose sum is σ = 3134405892. Its totient is φ = 3127994112.

The previous prime is 3131199991. The next prime is 3131200003. The reversal of 3131200001 is 1000021313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000021313 = 2693 ⋅371341.

It can be written as a sum of positive squares in 2 ways, for example, as 2558842225 + 572357776 = 50585^2 + 23924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131200001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131200003) 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, 1601480 + ... + 1603433.

It is an arithmetic number, because the mean of its divisors is an integer number (783601473).

Almost surely, 2^3131200001 is an apocalyptic number.

It is an amenable number.

3131200001 is a deficient number, since it is larger than the sum of its proper divisors (3205891).

3131200001 is an equidigital number, since it uses as much as digits as its factorization.

3131200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205890.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 3131200001 is about 55957.1264540988. The cubic root of 3131200001 is about 1462.9751057380.

Adding to 3131200001 its reverse (1000021313), we get a palindrome (4131221314).

The spelling of 3131200001 in words is "three billion, one hundred thirty-one million, two hundred thousand, one".