31221133130190 has 16 divisors (see below), whose sum is σ = 74930719512528. Its totient is φ = 8325635501376.

The previous prime is 31221133130189. The next prime is 31221133130219. The reversal of 31221133130190 is 9103133112213.

It is a happy number.

It is a super-2 number, since 2×31221133130190² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1040704437673 = 31221133130190 / (3 + 1 + 2 + 2 + 1 + 1 + 3 + 3 + 1 + 3 + 0 + 1 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520352218807 + ... + 520352218866.

It is an arithmetic number, because the mean of its divisors is an integer number (4683169969533).

Almost surely, 2^{31221133130190} is an apocalyptic number.

31221133130190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31221133130190 is an abundant number, since it is smaller than the sum of its proper divisors (43709586382338).

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

31221133130190 is a wasteful number, since it uses less digits than its factorization.

31221133130190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040704437683.

The product of its (nonzero) digits is 2916, while the sum is 30.

The spelling of 31221133130190 in words is "thirty-one trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred thirty thousand, one hundred ninety".