1231028601 has 32 divisors (see below), whose sum is σ = 1911444480. Its totient is φ = 696830400.

The previous prime is 1231028593. The next prime is 1231028621. The reversal of 1231028601 is 1068201321.

It is not a de Polignac number, because 1231028601 - 2³ = 1231028593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231028621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30691 + ... + 58343.

It is an arithmetic number, because the mean of its divisors is an integer number (59732640).

Almost surely, 2^1231028601 is an apocalyptic number.

1231028601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1231028601 is a deficient number, since it is larger than the sum of its proper divisors (680415879).

1231028601 is a wasteful number, since it uses less digits than its factorization.

1231028601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27757.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1231028601 is about 35086.0171720872. The cubic root of 1231028601 is about 1071.7398546484.

Adding to 1231028601 its reverse (1068201321), we get a palindrome (2299229922).

The spelling of 1231028601 in words is "one billion, two hundred thirty-one million, twenty-eight thousand, six hundred one".