1231112020019 has 8 divisors (see below), whose sum is σ = 1406991889248. Its totient is φ = 1055233831680.

The previous prime is 1231112020013. The next prime is 1231112020027. The reversal of 1231112020019 is 9100202111321.

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

It is not a de Polignac number, because 1231112020019 - 2¹² = 1231112015923 is a prime.

It is a super-2 number, since 2×1231112020019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231112019976 and 1231112020003.

It is not an unprimeable number, because it can be changed into a prime (1231112020013) 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, 2531459 + ... + 2978339.

It is an arithmetic number, because the mean of its divisors is an integer number (175873986156).

Almost surely, 2^{1231112020019} is an apocalyptic number.

1231112020019 is a deficient number, since it is larger than the sum of its proper divisors (175879869229).

1231112020019 is an equidigital number, since it uses as much as digits as its factorization.

1231112020019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840445.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1231112020019 in words is "one trillion, two hundred thirty-one billion, one hundred twelve million, twenty thousand, nineteen".