1131028915 has 8 divisors (see below), whose sum is σ = 1386112320. Its totient is φ = 885571392.

The previous prime is 1131028897. The next prime is 1131028973. The reversal of 1131028915 is 5198201311.

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 1131028915 - 2⁵ = 1131028883 is a prime.

It is a super-3 number, since 3×1131028915³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406210 + ... + 2406679.

It is an arithmetic number, because the mean of its divisors is an integer number (173264040).

Almost surely, 2^1131028915 is an apocalyptic number.

1131028915 is a deficient number, since it is larger than the sum of its proper divisors (255083405).

1131028915 is an equidigital number, since it uses as much as digits as its factorization.

1131028915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812941.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 1131028915 is about 33630.7733333624. The cubic root of 1131028915 is about 1041.8964764287.

The spelling of 1131028915 in words is "one billion, one hundred thirty-one million, twenty-eight thousand, nine hundred fifteen".