1065161031 has 32 divisors (see below), whose sum is σ = 1582344960. Its totient is φ = 631929600.

The previous prime is 1065161021. The next prime is 1065161051. The reversal of 1065161031 is 1301615601.

It is a de Polignac number, because none of the positive numbers 2^k-1065161031 is a prime.

It is a super-2 number, since 2×1065161031² = 2269136043921965922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065160992 and 1065161010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065161021) 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, 333261 + ... + 336441.

It is an arithmetic number, because the mean of its divisors is an integer number (49448280).

Almost surely, 2^1065161031 is an apocalyptic number.

1065161031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1065161031 is a deficient number, since it is larger than the sum of its proper divisors (517183929).

1065161031 is a wasteful number, since it uses less digits than its factorization.

1065161031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1065161031 is about 32636.8048528038. The cubic root of 1065161031 is about 1021.2649406469.

Adding to 1065161031 its reverse (1301615601), we get a palindrome (2366776632).

The spelling of 1065161031 in words is "one billion, sixty-five million, one hundred sixty-one thousand, thirty-one".