3131201001 has 4 divisors (see below), whose sum is σ = 4174934672. Its totient is φ = 2087467332.

The previous prime is 3131200987. The next prime is 3131201009. The reversal of 3131201001 is 1001021313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1001021313 = 3 ⋅333673771.

It is not a de Polignac number, because 3131201001 - 2²¹ = 3129103849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131201009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521866831 + ... + 521866836.

It is an arithmetic number, because the mean of its divisors is an integer number (1043733668).

Almost surely, 2^3131201001 is an apocalyptic number.

It is an amenable number.

3131201001 is a deficient number, since it is larger than the sum of its proper divisors (1043733671).

3131201001 is a wasteful number, since it uses less digits than its factorization.

3131201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043733670.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 3131201001 is about 55957.1353895104. The cubic root of 3131201001 is about 1462.9752614797.

Adding to 3131201001 its reverse (1001021313), we get a palindrome (4132222314).

The spelling of 3131201001 in words is "three billion, one hundred thirty-one million, two hundred one thousand, one".