1115344531 has 8 divisors (see below), whose sum is σ = 1276743680. Its totient is φ = 954461448.

The previous prime is 1115344519. The next prime is 1115344541. The reversal of 1115344531 is 1354435111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115344531 - 2¹⁵ = 1115311763 is a prime.

It is a super-2 number, since 2×1115344531² = 2487986845663219922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115344531.

It is not an unprimeable number, because it can be changed into a prime (1115344501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124371 + ... + 133036.

It is an arithmetic number, because the mean of its divisors is an integer number (159592960).

Almost surely, 2^1115344531 is an apocalyptic number.

1115344531 is a deficient number, since it is larger than the sum of its proper divisors (161399149).

1115344531 is an equidigital number, since it uses as much as digits as its factorization.

1115344531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258033.

The product of its digits is 3600, while the sum is 28.

The square root of 1115344531 is about 33396.7742603983. The cubic root of 1115344531 is about 1037.0579235475.

Adding to 1115344531 its reverse (1354435111), we get a palindrome (2469779642).

The spelling of 1115344531 in words is "one billion, one hundred fifteen million, three hundred forty-four thousand, five hundred thirty-one".