1115031481 has 2 divisors, whose sum is σ = 1115031482. Its totient is φ = 1115031480.

The previous prime is 1115031461. The next prime is 1115031557. The reversal of 1115031481 is 1841305111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721405881 + 393625600 = 26859^2 + 19840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115031481 - 2¹³ = 1115023289 is a prime.

It is a super-2 number, since 2×1115031481² = 2486590407242106722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1115031461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557515740 + 557515741.

It is an arithmetic number, because the mean of its divisors is an integer number (557515741).

Almost surely, 2^1115031481 is an apocalyptic number.

It is an amenable number.

1115031481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115031481 is an equidigital number, since it uses as much as digits as its factorization.

1115031481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 1115031481 is about 33392.0871015874. The cubic root of 1115031481 is about 1036.9608888488.

Adding to 1115031481 its reverse (1841305111), we get a palindrome (2956336592).

The spelling of 1115031481 in words is "one billion, one hundred fifteen million, thirty-one thousand, four hundred eighty-one".