31030033203121 has 8 divisors (see below), whose sum is σ = 31046122277120. Its totient is φ = 31013945634672.

The previous prime is 31030033203067. The next prime is 31030033203133. The reversal of 31030033203121 is 12130233003013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31030033203121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31030033203092 and 31030033203101.

It is not an unprimeable number, because it can be changed into a prime (31030033203161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42093850 + ... + 42824668.

It is an arithmetic number, because the mean of its divisors is an integer number (3880765284640).

Almost surely, 2^{31030033203121} is an apocalyptic number.

It is an amenable number.

31030033203121 is a deficient number, since it is larger than the sum of its proper divisors (16089073999).

31030033203121 is a wasteful number, since it uses less digits than its factorization.

31030033203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752775.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31030033203121 its reverse (12130233003013), we get a palindrome (43160266206134).

The spelling of 31030033203121 in words is "thirty-one trillion, thirty billion, thirty-three million, two hundred three thousand, one hundred twenty-one".