1901431883123 has 2 divisors, whose sum is σ = 1901431883124. Its totient is φ = 1901431883122.

The previous prime is 1901431883063. The next prime is 1901431883159. The reversal of 1901431883123 is 3213881341091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1901431883123 - 2¹² = 1901431879027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1901431883623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950715941561 + 950715941562.

It is an arithmetic number, because the mean of its divisors is an integer number (950715941562).

Almost surely, 2^{1901431883123} is an apocalyptic number.

1901431883123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901431883123 is an equidigital number, since it uses as much as digits as its factorization.

1901431883123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 1901431883123 in words is "one trillion, nine hundred one billion, four hundred thirty-one million, eight hundred eighty-three thousand, one hundred twenty-three".