851431463 has 4 divisors (see below), whose sum is σ = 852447120. Its totient is φ = 850415808.

The previous prime is 851431447. The next prime is 851431481. The reversal of 851431463 is 364134158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 851431463 - 2⁴ = 851431447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851431403) 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, 506570 + ... + 508247.

It is an arithmetic number, because the mean of its divisors is an integer number (213111780).

Almost surely, 2^851431463 is an apocalyptic number.

851431463 is a deficient number, since it is larger than the sum of its proper divisors (1015657).

851431463 is a wasteful number, since it uses less digits than its factorization.

851431463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015656.

The product of its digits is 34560, while the sum is 35.

The square root of 851431463 is about 29179.2985350916. The cubic root of 851431463 is about 947.7996955993.

The spelling of 851431463 in words is "eight hundred fifty-one million, four hundred thirty-one thousand, four hundred sixty-three".