1031013161 has 4 divisors (see below), whose sum is σ = 1091661012. Its totient is φ = 970365312.

The previous prime is 1031013149. The next prime is 1031013163. The reversal of 1031013161 is 1613101301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 885955225 + 145057936 = 29765^2 + 12044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031013161 - 2¹⁰ = 1031012137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 60647833 = 1031013161 / (1 + 0 + 3 + 1 + 0 + 1 + 3 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031013163) 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, 30323900 + ... + 30323933.

It is an arithmetic number, because the mean of its divisors is an integer number (272915253).

Almost surely, 2^1031013161 is an apocalyptic number.

It is an amenable number.

1031013161 is a deficient number, since it is larger than the sum of its proper divisors (60647851).

1031013161 is an equidigital number, since it uses as much as digits as its factorization.

1031013161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60647850.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1031013161 is about 32109.3936566856. The cubic root of 1031013161 is about 1010.2326559413.

Adding to 1031013161 its reverse (1613101301), we get a palindrome (2644114462).

The spelling of 1031013161 in words is "one billion, thirty-one million, thirteen thousand, one hundred sixty-one".