2251660331 has 2 divisors, whose sum is σ = 2251660332. Its totient is φ = 2251660330.

The previous prime is 2251660309. The next prime is 2251660337. The reversal of 2251660331 is 1330661522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2251660331 - 2⁶ = 2251660267 is a prime.

It is a super-2 number, since 2×2251660331² = 10139948492398059122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2251660294 and 2251660303.

It is not a weakly prime, because it can be changed into another prime (2251660337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125830165 + 1125830166.

It is an arithmetic number, because the mean of its divisors is an integer number (1125830166).

Almost surely, 2^2251660331 is an apocalyptic number.

2251660331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251660331 is an equidigital number, since it uses as much as digits as its factorization.

2251660331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2251660331 is about 47451.6631004647. The cubic root of 2251660331 is about 1310.6929362384.

The spelling of 2251660331 in words is "two billion, two hundred fifty-one million, six hundred sixty thousand, three hundred thirty-one".