31030030112121 has 32 divisors (see below), whose sum is σ = 47634994080000. Its totient is φ = 19940007919104.

The previous prime is 31030030112071. The next prime is 31030030112171. The reversal of 31030030112121 is 12121103003013.

31030030112121 is a `hidden beast` number, since 31 + 0 + 300 + 301 + 12 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (31030030112071) and next prime (31030030112171).

It is not a de Polignac number, because 31030030112121 - 2³⁰ = 31028956370297 is a prime.

It is a super-2 number, since 2×31030030112121² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31030030112094 and 31030030112103.

It is not an unprimeable number, because it can be changed into a prime (31030030112171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32610840 + ... + 33548873.

It is an arithmetic number, because the mean of its divisors is an integer number (1488593565000).

Almost surely, 2^{31030030112121} is an apocalyptic number.

It is an amenable number.

31030030112121 is a deficient number, since it is larger than the sum of its proper divisors (16604963967879).

31030030112121 is a wasteful number, since it uses less digits than its factorization.

31030030112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66160350 (or 66160344 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31030030112121 its reverse (12121103003013), we get a palindrome (43151133115134).

The spelling of 31030030112121 in words is "thirty-one trillion, thirty billion, thirty million, one hundred twelve thousand, one hundred twenty-one".