1032401391 has 32 divisors (see below), whose sum is σ = 1647068160. Its totient is φ = 562408704.

The previous prime is 1032401371. The next prime is 1032401399. The reversal of 1032401391 is 1931042301.

It is not a de Polignac number, because 1032401391 - 2⁹ = 1032400879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032401399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147765 + ... + 154593.

It is an arithmetic number, because the mean of its divisors is an integer number (51470880).

Almost surely, 2^1032401391 is an apocalyptic number.

1032401391 is a deficient number, since it is larger than the sum of its proper divisors (614666769).

1032401391 is a wasteful number, since it uses less digits than its factorization.

1032401391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1032401391 is about 32131.0035790979. The cubic root of 1032401391 is about 1010.6858691355.

Adding to 1032401391 its reverse (1931042301), we get a palindrome (2963443692).

The spelling of 1032401391 in words is "one billion, thirty-two million, four hundred one thousand, three hundred ninety-one".