1031232401 has 4 divisors (see below), whose sum is σ = 1031371572. Its totient is φ = 1031093232.

The previous prime is 1031232361. The next prime is 1031232481. The reversal of 1031232401 is 1042321301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042321301 = 7 ⋅148903043.

It can be written as a sum of positive squares in 2 ways, for example, as 100982401 + 930250000 = 10049^2 + 30500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031232401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031232401.

It is not an unprimeable number, because it can be changed into a prime (1031232481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57806 + ... + 73511.

It is an arithmetic number, because the mean of its divisors is an integer number (257842893).

Almost surely, 2^1031232401 is an apocalyptic number.

It is an amenable number.

1031232401 is a deficient number, since it is larger than the sum of its proper divisors (139171).

1031232401 is an equidigital number, since it uses as much as digits as its factorization.

1031232401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139170.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1031232401 is about 32112.8074294354. The cubic root of 1031232401 is about 1010.3042579081.

Adding to 1031232401 its reverse (1042321301), we get a palindrome (2073553702).

Subtracting 1031232401 from its reverse (1042321301), we obtain a square (11088900 = 3330²).

The spelling of 1031232401 in words is "one billion, thirty-one million, two hundred thirty-two thousand, four hundred one".