1031161327 has 4 divisors (see below), whose sum is σ = 1178470096. Its totient is φ = 883852560.

The previous prime is 1031161319. The next prime is 1031161343. The reversal of 1031161327 is 7231611301.

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 1031161327 - 2³ = 1031161319 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 (1031161127) 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, 73654374 + ... + 73654387.

It is an arithmetic number, because the mean of its divisors is an integer number (294617524).

Almost surely, 2^1031161327 is an apocalyptic number.

1031161327 is a deficient number, since it is larger than the sum of its proper divisors (147308769).

1031161327 is an equidigital number, since it uses as much as digits as its factorization.

1031161327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147308768.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1031161327 is about 32111.7007802452. The cubic root of 1031161327 is about 1010.2810468406.

Adding to 1031161327 its reverse (7231611301), we get a palindrome (8262772628).

The spelling of 1031161327 in words is "one billion, thirty-one million, one hundred sixty-one thousand, three hundred twenty-seven".