2285631157 has 2 divisors, whose sum is σ = 2285631158. Its totient is φ = 2285631156.

The previous prime is 2285631133. The next prime is 2285631167. The reversal of 2285631157 is 7511365822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2284935601 + 695556 = 47801^2 + 834^2 .

It is a cyclic number.

It is not a de Polignac number, because 2285631157 - 2³¹ = 138147509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2285631167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1142815578 + 1142815579.

It is an arithmetic number, because the mean of its divisors is an integer number (1142815579).

Almost surely, 2^2285631157 is an apocalyptic number.

It is an amenable number.

2285631157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2285631157 is an equidigital number, since it uses as much as digits as its factorization.

2285631157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 2285631157 is about 47808.2749845673. The cubic root of 2285631157 is about 1317.2515426714.

Adding to 2285631157 its reverse (7511365822), we get a palindrome (9796996979).

The spelling of 2285631157 in words is "two billion, two hundred eighty-five million, six hundred thirty-one thousand, one hundred fifty-seven".