7031113121 has 8 divisors (see below), whose sum is σ = 7066941984. Its totient is φ = 6995308320.

The previous prime is 7031113099. The next prime is 7031113139. The reversal of 7031113121 is 1213111307.

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

It is not a de Polignac number, because 7031113121 - 2⁶ = 7031113057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7031113093 and 7031113102.

It is not an unprimeable number, because it can be changed into a prime (7031113151) 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, 976085 + ... + 983261.

It is an arithmetic number, because the mean of its divisors is an integer number (883367748).

Almost surely, 2^7031113121 is an apocalyptic number.

It is an amenable number.

7031113121 is a deficient number, since it is larger than the sum of its proper divisors (35828863).

7031113121 is a wasteful number, since it uses less digits than its factorization.

7031113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12031.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 7031113121 is about 83851.7329636067. The cubic root of 7031113121 is about 1915.7611492980.

Adding to 7031113121 its reverse (1213111307), we get a palindrome (8244224428).

The spelling of 7031113121 in words is "seven billion, thirty-one million, one hundred thirteen thousand, one hundred twenty-one".