4020202531 has 2 divisors, whose sum is σ = 4020202532. Its totient is φ = 4020202530.

The previous prime is 4020202489. The next prime is 4020202547. The reversal of 4020202531 is 1352020204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4020202531 - 2⁹ = 4020202019 is a prime.

It is a super-2 number, since 2×4020202531² = 32324056780517611922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4020202499 and 4020202508.

It is not a weakly prime, because it can be changed into another prime (4020202331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010101265 + 2010101266.

It is an arithmetic number, because the mean of its divisors is an integer number (2010101266).

Almost surely, 2^4020202531 is an apocalyptic number.

4020202531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020202531 is an equidigital number, since it uses as much as digits as its factorization.

4020202531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4020202531 is about 63405.0670766935. The cubic root of 4020202531 is about 1590.0690252592.

Adding to 4020202531 its reverse (1352020204), we get a palindrome (5372222735).

The spelling of 4020202531 in words is "four billion, twenty million, two hundred two thousand, five hundred thirty-one".