1011161003 has 6 divisors (see below), whose sum is σ = 1074140196. Its totient is φ = 951680672.

The previous prime is 1011160999. The next prime is 1011161023. The reversal of 1011161003 is 3001611101.

It is not a de Polignac number, because 1011161003 - 2² = 1011160999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011161023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1749125 + ... + 1749702.

It is an arithmetic number, because the mean of its divisors is an integer number (179023366).

Almost surely, 2^1011161003 is an apocalyptic number.

1011161003 is a deficient number, since it is larger than the sum of its proper divisors (62979193).

1011161003 is an equidigital number, since it uses as much as digits as its factorization.

1011161003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498861 (or 3498844 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1011161003 is about 31798.7578845464. The cubic root of 1011161003 is about 1003.7065786336.

Adding to 1011161003 its reverse (3001611101), we get a palindrome (4012772104).

The spelling of 1011161003 in words is "one billion, eleven million, one hundred sixty-one thousand, three".