1020204431 has 2 divisors, whose sum is σ = 1020204432. Its totient is φ = 1020204430.

The previous prime is 1020204421. The next prime is 1020204439. The reversal of 1020204431 is 1344020201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020204431 - 2¹⁴ = 1020188047 is a prime.

It is a super-2 number, since 2×1020204431² = 2081634162064067522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020204439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510102215 + 510102216.

It is an arithmetic number, because the mean of its divisors is an integer number (510102216).

Almost surely, 2^1020204431 is an apocalyptic number.

1020204431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020204431 is an equidigital number, since it uses as much as digits as its factorization.

1020204431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020204431 is about 31940.6391764473. The cubic root of 1020204431 is about 1006.6899550309.

Adding to 1020204431 its reverse (1344020201), we get a palindrome (2364224632).

The spelling of 1020204431 in words is "one billion, twenty million, two hundred four thousand, four hundred thirty-one".