1128008390731 has 4 divisors (see below), whose sum is σ = 1158495104032. Its totient is φ = 1097521677432.

The previous prime is 1128008390713. The next prime is 1128008390741. The reversal of 1128008390731 is 1370938008211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1128008390731 - 2⁷ = 1128008390603 is a prime.

It is a super-2 number, since 2×1128008390731² (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 (1128008390741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15243356595 + ... + 15243356668.

It is an arithmetic number, because the mean of its divisors is an integer number (289623776008).

Almost surely, 2^{1128008390731} is an apocalyptic number.

1128008390731 is a deficient number, since it is larger than the sum of its proper divisors (30486713301).

1128008390731 is an equidigital number, since it uses as much as digits as its factorization.

1128008390731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30486713300.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 1128008390731 in words is "one trillion, one hundred twenty-eight billion, eight million, three hundred ninety thousand, seven hundred thirty-one".