6451207131 has 4 divisors (see below), whose sum is σ = 8601609512. Its totient is φ = 4300804752.

The previous prime is 6451207129. The next prime is 6451207163. The reversal of 6451207131 is 1317021546.

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

It is not a de Polignac number, because 6451207131 - 2¹ = 6451207129 is a prime.

It is a super-2 number, since 2×6451207131² = 83236146894130502322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6451207171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075201186 + ... + 1075201191.

It is an arithmetic number, because the mean of its divisors is an integer number (2150402378).

Almost surely, 2^6451207131 is an apocalyptic number.

6451207131 is a deficient number, since it is larger than the sum of its proper divisors (2150402381).

6451207131 is a wasteful number, since it uses less digits than its factorization.

6451207131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150402380.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6451207131 is about 80319.4069387966. The cubic root of 6451207131 is about 1861.5741030729.

Adding to 6451207131 its reverse (1317021546), we get a palindrome (7768228677).

The spelling of 6451207131 in words is "six billion, four hundred fifty-one million, two hundred seven thousand, one hundred thirty-one".