231221330112019 has 16 divisors (see below), whose sum is σ = 251477010497664. Its totient is φ = 211318491888000.

The previous prime is 231221330111999. The next prime is 231221330112043. The reversal of 231221330112019 is 910211033122132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231221330112019 - 2⁴⁷ = 90483841756691 is a prime.

It is a super-2 number, since 2×231221330112019² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231221330112079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83060529 + ... + 85799149.

It is an arithmetic number, because the mean of its divisors is an integer number (15717313156104).

Almost surely, 2^{231221330112019} is an apocalyptic number.

231221330112019 is a deficient number, since it is larger than the sum of its proper divisors (20255680385645).

231221330112019 is a wasteful number, since it uses less digits than its factorization.

231221330112019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803038.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 231221330112019 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty million, one hundred twelve thousand, nineteen".