1051231235987 has 8 divisors (see below), whose sum is σ = 1055021991552. Its totient is φ = 1047440833600.

The previous prime is 1051231235983. The next prime is 1051231236001. The reversal of 1051231235987 is 7895321321501.

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 1051231235987 - 2² = 1051231235983 is a prime.

It is a super-2 number, since 2×1051231235987² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051231235983) 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, 6856733 + ... + 7008369.

It is an arithmetic number, because the mean of its divisors is an integer number (131877748944).

Almost surely, 2^{1051231235987} is an apocalyptic number.

1051231235987 is a deficient number, since it is larger than the sum of its proper divisors (3790755565).

1051231235987 is a wasteful number, since it uses less digits than its factorization.

1051231235987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176589.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 1051231235987 in words is "one trillion, fifty-one billion, two hundred thirty-one million, two hundred thirty-five thousand, nine hundred eighty-seven".