1131012987 has 8 divisors (see below), whose sum is σ = 1624018704. Its totient is φ = 696007968.

The previous prime is 1131012973. The next prime is 1131013001. The reversal of 1131012987 is 7892101311.

It is an interprime number because it is at equal distance from previous prime (1131012973) and next prime (1131013001).

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

It is not a de Polignac number, because 1131012987 - 2⁷ = 1131012859 is a prime.

1131012987 is a modest number, since divided by 12987 gives 1131 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1131012947) 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, 14500128 + ... + 14500205.

It is an arithmetic number, because the mean of its divisors is an integer number (203002338).

Almost surely, 2^1131012987 is an apocalyptic number.

1131012987 is a deficient number, since it is larger than the sum of its proper divisors (493005717).

1131012987 is a wasteful number, since it uses less digits than its factorization.

1131012987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29000349.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 1131012987 is about 33630.5365256042. The cubic root of 1131012987 is about 1041.8915854824.

The spelling of 1131012987 in words is "one billion, one hundred thirty-one million, twelve thousand, nine hundred eighty-seven".