1520303123 has 2 divisors, whose sum is σ = 1520303124. Its totient is φ = 1520303122.

The previous prime is 1520303117. The next prime is 1520303137. The reversal of 1520303123 is 3213030251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520303123 - 2¹⁴ = 1520286739 is a prime.

It is a super-2 number, since 2×1520303123² = 4622643171607106258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520303095 and 1520303104.

It is not a weakly prime, because it can be changed into another prime (1520303623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760151561 + 760151562.

It is an arithmetic number, because the mean of its divisors is an integer number (760151562).

Almost surely, 2^1520303123 is an apocalyptic number.

1520303123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520303123 is an equidigital number, since it uses as much as digits as its factorization.

1520303123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1520303123 is about 38991.0646558926. The cubic root of 1520303123 is about 1149.8558415391.

Adding to 1520303123 its reverse (3213030251), we get a palindrome (4733333374).

The spelling of 1520303123 in words is "one billion, five hundred twenty million, three hundred three thousand, one hundred twenty-three".