2231851057 has 2 divisors, whose sum is σ = 2231851058. Its totient is φ = 2231851056.

The previous prime is 2231851019. The next prime is 2231851067. The reversal of 2231851057 is 7501581322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2065157136 + 166693921 = 45444^2 + 12911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231851057 - 2¹⁵ = 2231818289 is a prime.

It is a super-3 number, since 3×2231851057³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2231851067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115925528 + 1115925529.

It is an arithmetic number, because the mean of its divisors is an integer number (1115925529).

Almost surely, 2^2231851057 is an apocalyptic number.

It is an amenable number.

2231851057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231851057 is an equidigital number, since it uses as much as digits as its factorization.

2231851057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 2231851057 is about 47242.4709027798. The cubic root of 2231851057 is about 1306.8379453722.

The spelling of 2231851057 in words is "two billion, two hundred thirty-one million, eight hundred fifty-one thousand, fifty-seven".