2231418557 has 2 divisors, whose sum is σ = 2231418558. Its totient is φ = 2231418556.

The previous prime is 2231418523. The next prime is 2231418583. The reversal of 2231418557 is 7558141322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2219728996 + 11689561 = 47114^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231418557 - 2¹² = 2231414461 is a prime.

It is a super-3 number, since 3×2231418557³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231418557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231418517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115709278 + 1115709279.

It is an arithmetic number, because the mean of its divisors is an integer number (1115709279).

Almost surely, 2^2231418557 is an apocalyptic number.

It is an amenable number.

2231418557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231418557 is an equidigital number, since it uses as much as digits as its factorization.

2231418557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 2231418557 is about 47237.8932320230. The cubic root of 2231418557 is about 1306.7535245767.

Adding to 2231418557 its reverse (7558141322), we get a palindrome (9789559879).

The spelling of 2231418557 in words is "two billion, two hundred thirty-one million, four hundred eighteen thousand, five hundred fifty-seven".