3121231103033 has 4 divisors (see below), whose sum is σ = 3137403285108. Its totient is φ = 3105058920960.

The previous prime is 3121231102981. The next prime is 3121231103041. The reversal of 3121231103033 is 3303011321213.

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 2169929332624 + 951301770409 = 1473068^2 + 975347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121231103033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121231103233) 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, 8086090748 + ... + 8086091133.

It is an arithmetic number, because the mean of its divisors is an integer number (784350821277).

Almost surely, 2^{3121231103033} is an apocalyptic number.

It is an amenable number.

3121231103033 is a deficient number, since it is larger than the sum of its proper divisors (16172182075).

3121231103033 is a wasteful number, since it uses less digits than its factorization.

3121231103033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16172182074.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 3121231103033 its reverse (3303011321213), we get a palindrome (6424242424246).

The spelling of 3121231103033 in words is "three trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred three thousand, thirty-three".