1023120019 has 2 divisors, whose sum is σ = 1023120020. Its totient is φ = 1023120018.

The previous prime is 1023119987. The next prime is 1023120053. The reversal of 1023120019 is 9100213201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023120019 - 2⁵ = 1023119987 is a prime.

It is a super-2 number, since 2×1023120019² = 2093549146557120722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1023119978 and 1023120005.

It is not a weakly prime, because it can be changed into another prime (1023121019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511560009 + 511560010.

It is an arithmetic number, because the mean of its divisors is an integer number (511560010).

Almost surely, 2^1023120019 is an apocalyptic number.

1023120019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023120019 is an equidigital number, since it uses as much as digits as its factorization.

1023120019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1023120019 is about 31986.2473416311. The cubic root of 1023120019 is about 1007.6480314970.

The spelling of 1023120019 in words is "one billion, twenty-three million, one hundred twenty thousand, nineteen".