31121022030030 has 24 divisors (see below), whose sum is σ = 80914657278312. Its totient is φ = 8298939207984.

The previous prime is 31121022030029. The next prime is 31121022030061. The reversal of 31121022030030 is 3003022012113.

31121022030030 is a `hidden beast` number, since 3 + 112 + 1 + 0 + 220 + 300 + 30 = 666.

It is a super-2 number, since 2×31121022030030² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31121022029985 and 31121022030012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172894566744 + ... + 172894566923.

It is an arithmetic number, because the mean of its divisors is an integer number (3371444053263).

Almost surely, 2^{31121022030030} is an apocalyptic number.

31121022030030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31121022030030 is an abundant number, since it is smaller than the sum of its proper divisors (49793635248282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31121022030030 is a wasteful number, since it uses less digits than its factorization.

31121022030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345789133680 (or 345789133677 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31121022030030 its reverse (3003022012113), we get a palindrome (34124044042143).

The spelling of 31121022030030 in words is "thirty-one trillion, one hundred twenty-one billion, twenty-two million, thirty thousand, thirty".