6501020431 has 2 divisors, whose sum is σ = 6501020432. Its totient is φ = 6501020430.

The previous prime is 6501020429. The next prime is 6501020459. The reversal of 6501020431 is 1340201056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6501020431 - 2¹ = 6501020429 is a prime.

It is a super-2 number, since 2×6501020431² = 84526533288558851522, which contains 22 as substring.

Together with 6501020429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6501026431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250510215 + 3250510216.

It is an arithmetic number, because the mean of its divisors is an integer number (3250510216).

Almost surely, 2^6501020431 is an apocalyptic number.

6501020431 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501020431 is an equidigital number, since it uses as much as digits as its factorization.

6501020431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6501020431 is about 80628.9056790429. The cubic root of 6501020431 is about 1866.3532340701.

Adding to 6501020431 its reverse (1340201056), we get a palindrome (7841221487).

The spelling of 6501020431 in words is "six billion, five hundred one million, twenty thousand, four hundred thirty-one".