1020365431 has 4 divisors (see below), whose sum is σ = 1020445000. Its totient is φ = 1020285864.

The previous prime is 1020365413. The next prime is 1020365497. The reversal of 1020365431 is 1345630201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1020365431 - 2¹⁷ = 1020234359 is a prime.

It is a super-2 number, since 2×1020365431² = 2082291225559631522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020365396 and 1020365405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020365131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15681 + ... + 47818.

It is an arithmetic number, because the mean of its divisors is an integer number (255111250).

Almost surely, 2^1020365431 is an apocalyptic number.

1020365431 is a deficient number, since it is larger than the sum of its proper divisors (79569).

1020365431 is an equidigital number, since it uses as much as digits as its factorization.

1020365431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79568.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1020365431 is about 31943.1593772438. The cubic root of 1020365431 is about 1006.7429079989.

Adding to 1020365431 its reverse (1345630201), we get a palindrome (2365995632).

The spelling of 1020365431 in words is "one billion, twenty million, three hundred sixty-five thousand, four hundred thirty-one".