4020123313 has 2 divisors, whose sum is σ = 4020123314. Its totient is φ = 4020123312.

The previous prime is 4020123251. The next prime is 4020123329. The reversal of 4020123313 is 3133210204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3413831184 + 606292129 = 58428^2 + 24623^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020123313 - 2⁹ = 4020122801 is a prime.

It is a super-2 number, since 2×4020123313² = 32322782903452191938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4020123413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010061656 + 2010061657.

It is an arithmetic number, because the mean of its divisors is an integer number (2010061657).

Almost surely, 2^4020123313 is an apocalyptic number.

It is an amenable number.

4020123313 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020123313 is an equidigital number, since it uses as much as digits as its factorization.

4020123313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 4020123313 is about 63404.4423759093. The cubic root of 4020123313 is about 1590.0585810992.

Adding to 4020123313 its reverse (3133210204), we get a palindrome (7153333517).

The spelling of 4020123313 in words is "four billion, twenty million, one hundred twenty-three thousand, three hundred thirteen".