3201123031 has 4 divisors (see below), whose sum is σ = 3201280792. Its totient is φ = 3200965272.

The previous prime is 3201123017. The next prime is 3201123053. The reversal of 3201123031 is 1303211023.

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

It is a cyclic number.

It is not a de Polignac number, because 3201123031 - 2⁵ = 3201122999 is a prime.

It is a super-2 number, since 2×3201123031² = 20494377319197253922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201122996 and 3201123014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43005 + ... + 90838.

It is an arithmetic number, because the mean of its divisors is an integer number (800320198).

Almost surely, 2^3201123031 is an apocalyptic number.

3201123031 is a deficient number, since it is larger than the sum of its proper divisors (157761).

3201123031 is a wasteful number, since it uses less digits than its factorization.

3201123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157760.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3201123031 is about 56578.4679096209. The cubic root of 3201123031 is about 1473.7849660263.

Adding to 3201123031 its reverse (1303211023), we get a palindrome (4504334054).

The spelling of 3201123031 in words is "three billion, two hundred one million, one hundred twenty-three thousand, thirty-one".