2421231157 has 2 divisors, whose sum is σ = 2421231158. Its totient is φ = 2421231156.

The previous prime is 2421231151. The next prime is 2421231167. The reversal of 2421231157 is 7511321242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1496219761 + 925011396 = 38681^2 + 30414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421231157 - 2¹⁵ = 2421198389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421231151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210615578 + 1210615579.

It is an arithmetic number, because the mean of its divisors is an integer number (1210615579).

Almost surely, 2^2421231157 is an apocalyptic number.

It is an amenable number.

2421231157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421231157 is an equidigital number, since it uses as much as digits as its factorization.

2421231157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 2421231157 is about 49206.0073263418. The cubic root of 2421231157 is about 1342.8023252812.

Adding to 2421231157 its reverse (7511321242), we get a palindrome (9932552399).

The spelling of 2421231157 in words is "two billion, four hundred twenty-one million, two hundred thirty-one thousand, one hundred fifty-seven".