2251671731 has 4 divisors (see below), whose sum is σ = 2265485832. Its totient is φ = 2237857632.

The previous prime is 2251671689. The next prime is 2251671757. The reversal of 2251671731 is 1371761522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251671731 is a prime.

It is a super-2 number, since 2×2251671731² = 10140051168369072722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2251671691 and 2251671700.

It is not an unprimeable number, because it can be changed into a prime (2251671791) 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, 6906806 + ... + 6907131.

It is an arithmetic number, because the mean of its divisors is an integer number (566371458).

Almost surely, 2^2251671731 is an apocalyptic number.

2251671731 is a deficient number, since it is larger than the sum of its proper divisors (13814101).

2251671731 is a wasteful number, since it uses less digits than its factorization.

2251671731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13814100.

The product of its digits is 17640, while the sum is 35.

The square root of 2251671731 is about 47451.7832225513. The cubic root of 2251671731 is about 1310.6951482171.

The spelling of 2251671731 in words is "two billion, two hundred fifty-one million, six hundred seventy-one thousand, seven hundred thirty-one".