1020431431 has 2 divisors, whose sum is σ = 1020431432. Its totient is φ = 1020431430.

The previous prime is 1020431359. The next prime is 1020431437. The reversal of 1020431431 is 1341340201.

1020431431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020431431 - 2¹¹ = 1020429383 is a prime.

It is a super-2 number, since 2×1020431431² = 2082560610745415522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020431399 and 1020431408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020431437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510215715 + 510215716.

It is an arithmetic number, because the mean of its divisors is an integer number (510215716).

Almost surely, 2^1020431431 is an apocalyptic number.

1020431431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020431431 is an equidigital number, since it uses as much as digits as its factorization.

1020431431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1020431431 is about 31944.1924455761. The cubic root of 1020431431 is about 1006.7646138170.

Adding to 1020431431 its reverse (1341340201), we get a palindrome (2361771632).

The spelling of 1020431431 in words is "one billion, twenty million, four hundred thirty-one thousand, four hundred thirty-one".