1030401391 has 4 divisors (see below), whose sum is σ = 1040405392. Its totient is φ = 1020397392.

The previous prime is 1030401377. The next prime is 1030401413. The reversal of 1030401391 is 1931040301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1931040301 = 1607 ⋅1201643.

It is a cyclic number.

It is not a de Polignac number, because 1030401391 - 2²⁵ = 996846959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030401341) 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, 5001846 + ... + 5002051.

It is an arithmetic number, because the mean of its divisors is an integer number (260101348).

Almost surely, 2^1030401391 is an apocalyptic number.

1030401391 is a deficient number, since it is larger than the sum of its proper divisors (10004001).

1030401391 is a wasteful number, since it uses less digits than its factorization.

1030401391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10004000.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1030401391 is about 32099.8659031467. The cubic root of 1030401391 is about 1010.0328032348.

Adding to 1030401391 its reverse (1931040301), we get a palindrome (2961441692).

The spelling of 1030401391 in words is "one billion, thirty million, four hundred one thousand, three hundred ninety-one".