6391431253 has 8 divisors (see below), whose sum is σ = 6529046400. Its totient is φ = 6253884000.

The previous prime is 6391431227. The next prime is 6391431257. The reversal of 6391431253 is 3521341936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6391431253 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 (6391431257) 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 7 ways as a sum of consecutive naturals, for example, 203878 + ... + 233128.

It is an arithmetic number, because the mean of its divisors is an integer number (816130800).

Almost surely, 2^6391431253 is an apocalyptic number.

It is an amenable number.

6391431253 is a deficient number, since it is larger than the sum of its proper divisors (137615147).

6391431253 is a wasteful number, since it uses less digits than its factorization.

6391431253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33947.

The product of its digits is 58320, while the sum is 37.

The square root of 6391431253 is about 79946.4273935990. The cubic root of 6391431253 is about 1855.8065675352.

The spelling of 6391431253 in words is "six billion, three hundred ninety-one million, four hundred thirty-one thousand, two hundred fifty-three".